Sharks’ teeth carry clues about the oceans they swam in.
Christina Spence Morgan
These giant predators are helping solve the mystery of Earth’s cooling shift some 50 million years ago.
Heat and dryness are leaving high mountain areas more vulnerable to forest fires.
David McNew/Getty Images
As the risk of fires rises in areas once considered too wet to burn, it creates hazards for mountain communities and for downstream water supplies.
Dry conditions across the West follow a hot, dry year of record-setting wildfires in 2020. Communities were left with scenes like this, from California’s Creek Fire.
Amir Aghakouchak/University of California Irvine
Drought conditions are so bad, fish hatcheries are trucking their salmon to the ocean and ranchers are worried about having enough water for their livestock.
The California Aqueduct, which carries water more than 400 miles south from the Sierra Nevada, splits as it enters Southern California at the border of Kern and Los Angeles counties.
Installing solar panels over California’s 4,000 miles of canals could generate less expensive, renewable energy, save water, fight climate change – and offer a solution for the thirsty American West.
The sequoias that live on the western slopes of the Sierra Nevada in California are the largest trees in the world by volume.
Erin Donalson/EyeEm via Getty Images
The curator at UC Merced describes the evacuation and shows a selection of photographs from the 110-year history of the park.
A mixed-conifer forest in the central Sierra Nevada after restoration, with unthinned forest in the background.
Restoring western forests – thinning out small trees and dead wood – is an important strategy for reducing the risk of massive wildfires. But these projects aren’t fast, easy or cheap.
Hindu cremation being performed on the banks of the River Ganges in Varanasi, India.
Photo by Tim Graham/Getty Images
Hindu philosophy believes the soul to be immortal. Death is considered to be the end of only physical incarnation, as the soul continues its journey of multiple births until its final liberation.
Many Americans find comfort in familiar fast-food meals, but they undercut local food security.
Fast-food restaurants can be comforting places, but when they saturate communities, they crowd out healthy food sources and leave residents less nourished.
A coronavirus vaccine is coming, but when?
Francesco Carta fotografo/Moment via Getty Images
Vaccine development is usually a long process. The coronavirus pandemic is forcing researchers to innovate and test potential vaccines faster than ever before.
A rendering of the coronavirus.
Getty Images / 4x-image
Many of these new diseases cross over, jumping from wild animals to people.
A mast year can be a squirrel’s dream come true.
Masting is what biologists call the pattern of trees for miles around synchronizing to all produce lots of seeds – or very few. Why and how do they get on schedule?
Is a bottle of morning milk at night the equivalent of turning on all the lights at bedtime?
Breast milk contains ingredients in concentrations that change over the course of the day. Researchers think milk is chrononutrition, carrying molecular messages to help set a baby’s internal clock.
The trade war has high costs for both the U.S and China.
An economist explains why the US and Chinese governments are most likely to dig in their heels rather than find a compromise to end the costly trade conflict.
Professor Fabian V. Filipp lectures on the biology of malignant melanoma and pigmentation disease. The color of skin is due to the presence of a pigment called melanin, which can absorb cancer-causing sunlight.
Photo by Systems Biology and Cancer Metabolism Laboratory, Fabian V. Filipp. Used with permission. CC BY-SA.
An international team of researchers is probing the links between skin diseases, including cancer, to speed the search for cures.
Monitoring the flow of electrical power at the California Independent System Operator grid control center.
AP Photo/Rich Pedroncelli
A new law provides flexibility in terms of how the state can meet this new target for the electricity it consumes.
Los manifestantes sostienen carteles delante de la oficina del Servicio de Inmigración y Control de Aduanas (ICE).
AP Photo/Jeff Chiu
Una experta en inmigración analiza cada una de las agencias federales encargadas de hacer cumplir las leyes de inmigración.
Trump and Merkel: Friends, foes or frenemies?
AP Photo/Pablo Martinez Monsivais
The president, who called the European Union a ‘foe’ following a series of meetings in Europe, may not realize just how much Americans have gained from their relationship with Europe.
Protesters hold up signs outside of an Immigration and Customs Enforcement office.
AP Photo/Jeff Chiu
An immigration expert breaks through the alphabet soup of federal agencies responsible for enforcing immigration laws.
L’ours polaire pas impacté par le climat ?
À l’heure de la désinformation généralisée, l’initiative scientifique Climate Feedback permet de faire le tri entre les articles de presse qui sont en accord avec la science et ceux qui ne le sont pas.
Professor Fabian V. Filipp with his team working on precision targeting of malignant melanoma.
Systems Biology and Cancer Metabolism Laboratory
Cancer is a disease of our genes, but resistance to therapy might go beyond cancer mutations. The DNA stays the same, but cancer cells outsmart the drugs by switching their gene activity.