NEWS RELEASE A new species of quail-sized fossil bird from 44 million year old sediments in Utah fills in a gap in the fossil record of the early extinct relatives of chickens and turkeys, and it shows strong links with other extinct species from Namibia in Southern Africa and Uzbekistan in Central Asia. In their paper in the online scientific journal Diversity, the authors Dr. Thomas Stidham (Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of … [Read more...] about New tiny 44 million year old bird fossil links Africa and Asia to Utah
Fossil Feature: Multituberculates
The UCMP has one of the best collections of multituberculates, a small mammal from the Cretaceous characterized by their very interesting and very bumpy teeth. Luke Weaver, a PhD candidate from the Wilson Lab at the University of Washington visited the museum in Summer of 2018 to check out the collection and further his own research into these interesting creatures. His visit was supported in part by the Doris O. and Samuel P. Welles Research Fund. Check out the video for more on these … [Read more...] about Fossil Feature: Multituberculates
Researchers from Down Under come to UCMP to study our Australian fossils
Kangaroos … in Berkeley? That’s right, mate. You won’t find them leaping around the campus, though. Because they’re in the Museum of Paleontology’s fossil collections. In the 1950s, then-curator and professor Ruben A. Stirton decided to go to Australia’s Tirari Desert to look for fossil marsupials. He wanted to find evidence to answer the question of the origin and spread of marsupials through space and time. Did they come from Australia, Antarctica, or … [Read more...] about Researchers from Down Under come to UCMP to study our Australian fossils
Asteroids or volcanoes?
UC Berkeley alumnus Courtney Sprain and Berkeley Geochronology Center Director Paul Renne are lead authors on a report in Science detailing new argon-argon dating of the Deccan Traps in India. Their work on the timing of the Cretaceous-Paleogene extinctions relative to the Chicxulub impact and Deccan flood basalt eruptions remains the subject of exciting, ongoing research. Read more in the Berkeley News Center … [Read more...] about Asteroids or volcanoes?
Reading between the rocks: Reinterpreting the Late Ordovician mass extinction
This past summer, I had the opportunity to conduct my first field season on Anticosti Island (Québec, Canada). Located in the subarctic of Canada, Anticosti Island preserves a 200 kilometer-long transect of ancient seafloor. Late Ordovician tropical reefs and fossils are beautifully preserved across the island in towering coastal cliffs and river canyons. The sheer size of the island is astounding, and the insight its fossil record could provide into early Paleozoic marine communities is … [Read more...] about Reading between the rocks: Reinterpreting the Late Ordovician mass extinction
How often does extreme competition occur between species on the ocean floor?
Look around in nature or even in the city and you will see that organisms are not static entities, but interact with one another. Think of a robin with a worm in its beak, a tick crawling on your leg looking for a spot to puncture your skin, or two bucks fighting during the rutting season for the right to mate. The sea floor is also a place where animals search or fight for food to stay alive. On the continents, food is not unlimited; every individual tries to collect a piece of the pie (Fig. … [Read more...] about How often does extreme competition occur between species on the ocean floor?
Russell Waines’ stromatoporoid collection
Russell H. Waines was a geologist who dedicated most of his life to ancient sponges, the stromatoporoids, which were one of the most important reef builders during the Paleozoic. When I was a graduate student researcher at the UCMP in 2013, I had the pleasure of organizing this collection (Figure 1), which includes approximately 2000 fossil specimens (566 of which are registered in the UCMP database) mainly from the Devonian of Nevada, but also from Alaska, Arizona, California, New York, Utah, … [Read more...] about Russell Waines’ stromatoporoid collection
UCMP paleobiologists shed new light on ozone shield failure, forest sterility, and mass extinction
Members of the Looy Lab - Jeff Benca, Ivo Duijnstee, and Cindy Looy - co-authored a paper in the journal Science Advances. It details exciting new findings from experimental research on the effects on UV-B induced stresses on forest decline during the end-Permian extinction. Read more in the University press release. View the video: https://youtu.be/bz9je0Me4AU … [Read more...] about UCMP paleobiologists shed new light on ozone shield failure, forest sterility, and mass extinction
A new destination for disaster enthusiasts
The Cretaceous-Paleogene (K-Pg or K-T) mass extinction — the event in which the non-avian dinosaurs, along with about 70% of all species in the fossil record went extinct — was probably caused by the Chicxulub meteor impact in Yucatán, México. However, scientists have long wondered about the massive volcanic eruptions that were occurring in northwestern India at about the same time, the Deccan Traps. Volcanism is the likely cause of several prior mass extinctions, with no convincing evidence for … [Read more...] about A new destination for disaster enthusiasts
A Pleistocene pit-stop: the Barnosky lab excavates Natural Trap Cave, Wyoming
You might think that an 85-foot-deep hole where a bunch of horses, wolves, camels, elephants, and plenty of other animals accidentally plummeted to their death over tens of thousands of years would have enough red flags to make going into it yourself sound like a bad idea. But what if these unfortunate critters could tell you what their life was like and how they died? What if they could give you a warning about their death in a warming world after the last ice age and what it means for life in … [Read more...] about A Pleistocene pit-stop: the Barnosky lab excavates Natural Trap Cave, Wyoming
What do traces of predators tell about ancient marine ecosystems?
Reconstructing biotic interactions is crucial to understand the functioning and evolution of ecosystems through time, but this is notoriously difficult. Competition in deep time cannot be readily seen except for overgrowth of one organism by another under the assumption that both were alive at the same time. Parasites usually do not preserve because they are soft-bodied and tend to be small so that they are not spotted easily. The most abundant evidence of biotic interactions comes from the … [Read more...] about What do traces of predators tell about ancient marine ecosystems?
Understanding the evolutionary history of the cassiduloid echinoids
It is widely recognized that major groups evolve at different rates, in their own evolutionary trajectories. Some evolve fast and are very diversified while others evolve slowly and may never experience an explosion of diversity throughout their trajectory. One of my research interests is understanding the pace of morphological evolution through time, and the organisms selected to investigate this topic are the irregular echinoids. Commonly known irregular echinoids include the sand dollars … [Read more...] about Understanding the evolutionary history of the cassiduloid echinoids
Surprising new finds in museum specimens
I am very grateful to have received a UCMP Graduate Student Research Award via the Barnosky Fund in April 2016. I used these funds to collect pilot data from major natural history museum collections around the country for my dissertation research. My research investigates responses in fossil animal communities to climate change over long time intervals. We need historical data about the affects of climate change on animals in the past in order to anticipate these affects on animals in the … [Read more...] about Surprising new finds in museum specimens
A Hitchhiker’s Guide to the Pleistocene Sea
Using Fossil Whale Barnacles to Reconstruct Prehistoric Whale Migrations Baleen whales, as we know them today, lead lives that are largely defined by their annual migrations. Every year, whales spend their winters breeding and reproducing in tropical waters, then travel to poleward feeding areas each summer. For North Pacific humpback whales, winter breeding areas cluster around Central America and Hawaii, and then they travel to the Gulf of Alaska to feed in the summer (small numbers also … [Read more...] about A Hitchhiker’s Guide to the Pleistocene Sea
Bringing the field to our users through EPICC’s Virtual Field Experiences
Ever wonder where fossils from the UCMP were collected or want to know more about the geological setting of UCMP field areas? Curious about why an area looks the way it does? These questions and others are driving the development of Virtual Field Experiences (VFEs) associated with the EPICC project (Eastern Pacific Invertebrate Communities of the Cenozoic, http://epicc.berkeley.edu). Together with EPICC partners from the Paleontological Research Institution (PRI), UCMP Assistant Director Lisa … [Read more...] about Bringing the field to our users through EPICC’s Virtual Field Experiences
Cryptic caves and paleoecology of crustaceans in Cenozoic coral reefs
Just some months ago on a Saturday in July, I had the pleasure of snorkeling above the only coral reefs in the continental Unites States. These reefs in southern Florida still harbor many species of corals, fish, and other animals including crustaceans such as crabs, shrimps, and lobsters. These decapods are difficult to spot while snorkeling, but that does not mean they are not there. Their usually small size in this landscape of incredibly variable topography ensure they are able to hide … [Read more...] about Cryptic caves and paleoecology of crustaceans in Cenozoic coral reefs
Terraces through time: Reconstructing fossil beaches in southern California
San Nicolas Island is a strange, far-away place very familiar to a surprising number of Californians. Thanks to Scott O'Dell's Island of the Blue Dolphins, this island — the most remote of California's eight Channel Islands — and it's native Nicoleño people have been engrained into the imaginations of many elementary school children. My own mind was captivated by this story in the fourth grade when I had the opportunity to conduct fieldwork on San Nicolas Island with Daniel Muhs (U.S. Geological … [Read more...] about Terraces through time: Reconstructing fossil beaches in southern California
Our journey from the UCMP to South Africa to study fossil monkeys
At the time we got involved in what has now become for us - the South Africa project - one of us (Tesla) was soon-to-be a second year graduate student, and the other (Marianne) was about to start her senior year as an undergraduate student here at UC Berkeley. We began working together in the UC Museum of Paleontology (UCMP) during the summer of 2013, making our way through a massive project and cataloguing exceptional fossil material collected during the UC Africa Expedition of 1947 and 1948. … [Read more...] about Our journey from the UCMP to South Africa to study fossil monkeys
Solutions to climate change inspire French film
In December 2015 UCMP faculty curator Tony Barnosky and Stanford paleoecologist Liz Hadly attended The United Nations Conference on Climate Change to premiere a movie opening in Paris. The movie, Demain, was inspired by the 21-authored study that produced a 2012 Nature paper on tipping points. The film opens with Tony and Liz summarizing global change issues facing the world today. Tony states, "the movie is all about solutions and is very uplifting." It features solutions being implemented in … [Read more...] about Solutions to climate change inspire French film
The Anthropocene has come of age
Research by Faculty Curator and Professor Tony Barnosky and the Anthropocene Working Group continues to support the strong need for designating a distinct geological epoch, the Anthropocene. Landscape-altering human activities leave behind distinctive evidence (plastics, aluminum, concrete, black carbon, among others) in the sedimentary record. The group has received widespread media attention and recent articles in the New York Times, Los Angeles Times, and Washington Post demonstrate the … [Read more...] about The Anthropocene has come of age
Assistant director reunites with UCMP alumni in Ethiopia to investigate Mesozoic ecosystems
Assistant director Mark Goodwin is in Ethiopia for several weeks as part of a collaborative project with UCMP alums Greg Wilson (University of Washington) and Randall Irmis (Utah). Together with colleagues from the University of Oklahoma, Addis Ababa University, and Mekelle University in Ethiopia, the team is investigating non-marine Mesozoic ecosystems from the Northwestern Plateau, Ethiopia. Mark reports "we had great success in the Late Jurassic units and it is gratifying working with … [Read more...] about Assistant director reunites with UCMP alumni in Ethiopia to investigate Mesozoic ecosystems
Bones in the Belltower, a Berkeley Science Review feature by Sara ElShafie
The Fall 2015 issue of the Berkeley Science Review features an article by Sara ElShafie, a UCMP graduate student in the Padian Lab, on the McKittrick tar seep fossils that have been stored in the Campanile since the 1930s. The convergence of an Institute of Museum and Library Services grant to the UCMP to clean and catalogue more the 12,000 specimens in the collection and the centennial celebration of the Campanile in 2015 shined a spotlight on these unique fossils. In interviews with UCMP … [Read more...] about Bones in the Belltower, a Berkeley Science Review feature by Sara ElShafie
Humans began altering natural world 6,000 years ago
Scientists have found an abrupt change about 6,000 years ago in how terrestrial plant and animal species coexisted, right about the time human populations were ballooning and agriculture was spreading around the world. The findings suggest that human activity had reached a tipping point where hunting and farming were impacting the natural world in irreversible ways — changes that have continued to increase to this day. The researchers, including UC Berkeley’s Cindy Looy, an assistant professor … [Read more...] about Humans began altering natural world 6,000 years ago
National Fossil Day website features research by UCMP and partners
The UCMP partnership with Point Reyes National Seashore and the National Park Service continues to thrive and fossil discoveries made as a result of this partnership are highlighted in a previous post. Lillian Pearson, who works part-time with Museum Scientist Erica Clites cataloging specimens from the Point Reyes National Seashore, is the lead author on an article posted in honor of National Fossil Day (October 14, 2015) describing Cenozoic life and landscape features. National Fossil Day … [Read more...] about National Fossil Day website features research by UCMP and partners
Landscapes change forever when large mammals disappear
Research on the extinction of large mammals by members of the Barnosky Lab and their colleagues highlights how entire landscapes are affected when modern elephants and their extinct relatives, mastodons and mammoths, disappear. From plants that are no longer grazed to fewer nutrients in soils, the loss of megafauna significantly impacts ecosystems in a dramatic fashion as detailed in recent articles and interviews. Learn more about this recent research: SF Gate Science World … [Read more...] about Landscapes change forever when large mammals disappear
New research shows how mammals became smaller in response to dramatic climate warming
Fifty-six million years ago the Earth underwent a dramatic warming event, with temperatures increasing by as much as 7° Celsius over a span of just 100,000 years. Many mammals responded to this temperature increase by becoming much smaller. How these changes happened, however, is poorly understood. Identifying and measuring the mechanisms that drove these changes was the focus of a new study by University of California Museum of Paleontology researchers Brian Rankin and Pat Holroyd, and … [Read more...] about New research shows how mammals became smaller in response to dramatic climate warming
Partnership with Point Reyes National Seashore leads to important discovery of marine specimen
UCMP's partnership with Point Reyes National Seashore (National Park Service) has resulted in the discovery and collection of an important marine mammal specimen. This specimen is currently being prepared by UCMP Research Associate Robert Boessenecker, and will be reposited at UCMP. Lillian Pearson, a Geoscientist-in-the-Park intern, is setting up protocols for the long-term monitoring of paleontological resources (fossils) at Point Reyes. Erica Clites did this type of work for the National Park … [Read more...] about Partnership with Point Reyes National Seashore leads to important discovery of marine specimen
A morphological study of living and fossil Quercus (oak) pollen from California using scanning electron microscopy
California has more than 26 oak (Quercus) species, many of which have widespread distributions and different habitats. For example, the California black oaks (Q. kelloggii) are distributed in foothills and low mountains (altitude ~4750 feet), while the Coast live oak (Q. agrifolia; altitude ~830 feet) lives near the coast. Palynologists study the distribution of plant pollen and spores in space and time, and changes in their assemblages reflect changes in regional and local vegetation. In the … [Read more...] about A morphological study of living and fossil Quercus (oak) pollen from California using scanning electron microscopy
Building a forest: The adventures continue in the Jose Creek Member
It's April 18, 2015, and I am sitting in a room at the Charles Motel in Truth or Consequences, New Mexico, the same apartment-style room that I have stayed in during the past four years of field work. Time sure has passed by quickly; from my first paleontological dig as an undergraduate at Texas State University-San Marcos under Dr. Gary Upchurch, to my ambitious inaugural self-guided field trip as a first-year graduate student at Berkeley, to last year's even longer field excursion, and finally … [Read more...] about Building a forest: The adventures continue in the Jose Creek Member
Do green tide algae reproduce all year?
Occurrences of green tides have been on the rise in recent years worldwide. The most impressive have been reported off the coast of China in the Yellow Sea. In August 2014, the Monterey Bay area experienced a green tide that resulted in the accumulation of the macroalgae, Ulva, on its beaches. Algal blooms often make the headlines in spring and summer yet they are not a new phenomenon. In fact, toxic algal blooms may have been responsible for bird, fish and marine mammal die-offs recorded in … [Read more...] about Do green tide algae reproduce all year?
Fossils in the Campanile? It’s true!
If you have taken the elevator to the top of Sather Tower, aka the Campanile, perhaps you've heard that some of the floors of the tower are filled with fossils. This is not a campus myth, it's fact! The Campanile is celebrating its 100th anniversary this year and its very first occupants — moving in before the tower was even completed — were fossils. At that time, the museum and Department of Paleontology were in Bacon Hall, just east of the Campanile, so as a storage facility, the … [Read more...] about Fossils in the Campanile? It’s true!
Where have all the mammoths gone? And why do we care?
What’s the first thing that comes to mind when you think of Africa? Probably a lot of big animals, right? Elephants and lions, zebras and cheetahs, hippos and rhinos, giraffes, and enormous herds of wildebeest moving across the savannah. Well, what a lot of people don’t realize is that for most of the past 50 million years, most of the world looked a lot like Africa! Not that long ago, Europe, Asia, and North and South America all hosted relatives of elephants, zebras, and lions inhabiting … [Read more...] about Where have all the mammoths gone? And why do we care?
Mighty microbes implicated in Permian mass extinction
Ninety-six percent of marine and 70% of terrestrial species died in the Permian mass extinction, which began about 252 million years ago and lasted for over 20,000 years. Geochemistry tells us that this extinction coincided with a severe and rapid change in the Earth’s carbon cycle, but this alone could not have been the cause of the extinction. Initially it was thought that carbon dioxide released by Siberian volcanism explained this change in the carbon cycle but the volcanic outgassing was … [Read more...] about Mighty microbes implicated in Permian mass extinction
Tracking down ammonites in the Denver, Colorado, area
In July 2013, I visited the Denver, Colorado, area to collect data from two collections housed at United States Geological Survey (USGS) facilities and the University of Colorado (CU) Museum of Natural History. The USGS collections are housed in the Core Research Center on the Denver Federal Center campus. The building is also a repository for a large collection of soil samples and approximately 1.7 million feet of drilled rock, sediment, and ice cores. The Museum of Natural History is … [Read more...] about Tracking down ammonites in the Denver, Colorado, area
Examining morphologic variation in varanid skulls through time and space
As a graduate student affiliated with the UCMP, there are many resources readily available to me. Not only does the museum have the largest university research collection, but the curators, museum scientists, and staff are some of the most knowledgeable and helpful anywhere. UCMP is recognized for taking care of its graduate students, and one of the ways they do it is by providing multiple funding opportunities. I applied to UCMP for funding last year in order to conduct museum travel for my … [Read more...] about Examining morphologic variation in varanid skulls through time and space
California pollen taphonomy and pollen trap study in Clear Lake, California
Pollen analysis (or palynology) has been used to study Quaternary changes in vegetation and climate in North America since the nineteenth century. Palynologists generally compare plant assemblages in spatial-time frames instead of focusing on particular plant species. These changes in plant assemblages across landscapes through time are a good indication of vegetation shifts caused by environmental changes. Besides using pollen assemblages to reconstruct parent plant communities in a particular … [Read more...] about California pollen taphonomy and pollen trap study in Clear Lake, California
The hunt for a Ph.D. thesis: Collecting Late Cretaceous plant fossils in New Mexico
"It ain't Mexico and it ain't new" [quoted from a postcard in a gift shop] Armed with hammers, chisels, pry-bars, boxes of newspaper, and sunscreen, two trusty assistants (recent graduate Meriel Melendrez and current undergrad Nicolas Locatelli) and I drove from Berkeley in our 4WD extra-long SUV heading for southern New Mexico. There, we met up with paleobotanist Dr. Gary Upchurch and crew from Texas State University and geologist Dr. Greg Mack from New Mexico State University for two weeks of … [Read more...] about The hunt for a Ph.D. thesis: Collecting Late Cretaceous plant fossils in New Mexico
Waterlogged wood on the seafloor and the critters that call it home
For a marine biologist, I spend a lot of time thinking about wood. What happens to it if it happens to wash into a stream? How much of it gets into the ocean? Where does it sink? What happens to it once it reaches the bottom? What animals are likely to make it their home? I’m far from the first to think about the role of wood in ocean systems. In fact, Darwin thought quite a bit about how plant material might make its way into the ocean and how long different kinds of wood might stay afloat … [Read more...] about Waterlogged wood on the seafloor and the critters that call it home
Grad student’s artwork graces journal cover
“There are great color reconstructions of dinosaurs, so why not a plant?” thought Department of Integrative Biology and UCMP grad student Jeff Benca when he set out to reconstruct the appearance of a 375-million-year-old Devonian plant. Using Adobe Illustrator CS6 software, he constructed a striking three-dimensional, full-color portrait of a stem of the lycopod Leclercqia scolopendra, or centipede clubmoss. This was no small feat, considering that the fossil plant Jeff was illustrating was a … [Read more...] about Grad student’s artwork graces journal cover
Werning co-authors paper on growth in Parasaurolophus
Recent Ph.D. grad Sarah Werning, now in a postdoctoral position at the State University of New York at Stony Brook, was a major contributor to a paper released today on ontogeny in Parasaurolophus, a Cretaceous hadrosaurid dinosaur notable for the hollow, bony tube on its skull. The study centers around a remarkable skeleton of a baby Parasaurolophus (nicknamed "Joe") discovered in 2009 by Kevin Terris, a student at The Webb Schools in Claremont, California, in exposures of the … [Read more...] about Werning co-authors paper on growth in Parasaurolophus
Marshall shows terrestrial mammal extinction due to Red Queen with new work published in Science
By studying 19 groups of Cenozoic mammals Charles Marshall and Tiago Quental tested and confirmed the Red Queen hypothesis. Red Queen is the hypothesis that states that groups must continue to adapt and evolve in response to their environments in order to survive. It's not just extinction events that threaten groups--it's also low rates of origination of new species. The new research (published in Science) shows that these mammal groups have experienced diversity declines in part due to their … [Read more...] about Marshall shows terrestrial mammal extinction due to Red Queen with new work published in Science
Warmer climates can lead to big lizards
Pat Holroyd and co-authors describe a new species of giant lizard in the latest issue of Proceedings of the Royal Society B. The fossil jaw bones of this lizard have been in the UCMP collection since the 1970s, but it took a while for them to be recognized as something special. The specimens are from an herbivorous lizard that lived in the warm climate of Asia 40 million years ago. Dubbed Barbaturex morrisoni, this lizard was much bigger than the largest herbivorous lizards alive today. The … [Read more...] about Warmer climates can lead to big lizards
Werning blogs at PLOS about the fossils of the Sierra Nevada
In her latest post over at the Public Library of Science blog The Integrative Paleontologists Sarah Werning writes about about what the fossil history of California can teach us about climate change. UCMP is teaming up with other Berkeley natural history museums on the Berkeley Initiative in Global Change Biology to strive for a comprehensive picture of the effects of climate change on past, present, and future life. Read Sarah's post here. … [Read more...] about Werning blogs at PLOS about the fossils of the Sierra Nevada
The Looy Lab paleo detectives: Dori and Cindy at the NMNH
Tuesday morning, February 12, 2013, Dori Contreras and Cindy Looy woke before dawn to catch a cross-country flight to Washington, DC, for a two-week visit to the Smithsonian’s National Museum of Natural History (NMNH). Originally, Cindy was going to attend a biannual workshop of the Evolution of Terrestrial Ecosystem Program. However, after Dori obtained a Sigma Xi grant to study a fossil leaf collection housed in the NMNH’s paleobotanical collections, they teamed up and turned it into a joint … [Read more...] about The Looy Lab paleo detectives: Dori and Cindy at the NMNH
The Looy Lab paleo detectives
Solving the mysteries of the past and present one rock at a time East of the Berkeley campus, we see the beautiful, green Berkeley Hills, the golden letter "C" and a somewhat classy-looking, dome-shaped building on the Lawrence Berkeley National Laboratory campus. This houses the ALS, or Advanced Light Source. Personally, I find the name a bit silly because it doesn't seem to capture the awesomeness of this giant machine. It's like calling the Space Shuttle a Progressive Flying Tool. The ALS … [Read more...] about The Looy Lab paleo detectives
Caldwell’s rare octopus research makes headlines
Roy Caldwell has been working with Richard Ross of the California Academy of Sciences to study a rare, beautiful, and so far unnamed species of octopus. Their work, along with some of Roy's photos, is the subject of a feature article in the San Francisco Chronicle. … [Read more...] about Caldwell’s rare octopus research makes headlines
Plants have a lot to tell us about the past …
Jeff Benca is a welcome addition to the Department of Integrative Biology and UCMP’s highly active paleobotany group as a member of Cindy Looy’s lab. However, Jeff also spends a lot of his time “up the hill” at the UC Botanical Garden, where he has been given space for his astonishing collection of lycopods that he brought with him from his days at the University of Washington. This ancient vascular plant group (along with rare carnivorous plants and orchids) actually caught his interest while … [Read more...] about Plants have a lot to tell us about the past …
A collaborative grant to examine what triggers megafauna extinction
Tony Barnosky, with Charles Marshall as co_PI, has received an NSF grant that will support a highly collaborative research program to test the synergistic effects of climate change and human population growth in magnifying extinction intensity. South America offers a natural site to test these effects. Barnosky and graduate students Emily Lindsey and Natalia Villavicencio hypothesize that if human impacts were significant in causing extinctions, then the last records for taxa should be found … [Read more...] about A collaborative grant to examine what triggers megafauna extinction
Barnosky on Earth’s tipping points in Nature
Twenty-two scientists including lead author Tony Barnosky urge us to understand the danger of global environmental tipping points in their review paper in the June 7 issue of Nature. They examine data from past global environmental changes, compare it to how humans are changing the planet today, and discuss what that could mean for our future. They conclude that if we continue at our current rates of environmental destruction and resource use there will be dramatic impacts on the quality of life … [Read more...] about Barnosky on Earth’s tipping points in Nature
Dispatches from Clear Lake, part 1
UCMP's Cindy Looy is leading a project to collect 130,000 years worth of sediment data from Clear Lake in order to better understand how life has adapted to climate change. Along the way, members of her team will report back to us with all the progress and drama from the field. Here's our first set of dispatches. From Ivo Duijnstee: Thu, April 26 First mud It has begun. Except for some minor delays, the Clear Lake drilling expedition had a relatively smooth start. When our … [Read more...] about Dispatches from Clear Lake, part 1