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University of California - Davis


Smothered oceans

A study from the University of California, Davis reveals extreme oxygen loss in oceans around 10,000-17,000 years ago, coinciding with past global climate change. The findings suggest that modern oceans are moving into a state with no precedent in human history.

Engineering self-assembling amyloid fibers

Scientists at UC Davis and Rice University have developed methods to manipulate natural proteins into amyloid fibrils with predictable heights. These self-assembling fibers show great toughness, withstanding boiling, digestive proteins, and ultraviolet radiation, making them suitable for tissue engineering and other applications.

Study casts doubt on mammoth-killing cosmic impact

A recent study published in the Journal of Archaeological Science has challenged the long-held idea that a cosmic impact triggered the Younger Dryas cold period. The research found that the scoria droplets believed to be evidence of an impact event were actually formed by heating most likely caused by Stone Age house fires.

SourceUniversity of California - Davis·JournalJournal of Archaeological Science·DateJan 6, 2015

The winds of Titan

Researchers used NASA wind tunnel to study threshold speeds for particle movement on Titan, finding higher speeds than predicted from Earth-based models. The findings can help understand atmospheric forces on icy moons and planets with thin or thick atmospheres.

Making lab-grown tissues stronger

Researchers at UC Davis have developed a method to toughen up engineered cartilage and keep natural tissues strong outside the body. By depriving native or engineered cartilage of oxygen and using an enzyme called lysyl oxidase, they found that cross-linking occurs, making the material stronger.

SourceUniversity of California - Davis·JournalProceedings of the National Academy of Sciences·DateOct 30, 2014

Chimps plan ahead for a good breakfast

Researchers found that chimpanzees strategically plan their breakfast time and location based on environmental factors and food availability, taking risks to secure desired fruits. The study reveals the complexity of chimpanzee cognitive behavior in complex environments.

SourceUniversity of California - Davis·JournalProceedings of the National Academy of Sciences·DateOct 27, 2014

Manipulating memory with light

Scientists at UC Davis used optogenetics to erase specific memories in mice, showing coordinated activity between the cerebral cortex and hippocampus during memory retrieval. The study confirms a long-standing idea about memory processing, providing new insights into how the brain functions.

Making oxygen before life

Researchers at UC Davis have found a way to form oxygen in one step by using a high-energy vacuum ultraviolet laser to excite carbon dioxide. This process could be occurring naturally on Mars and Venus, where carbon dioxide dominates the atmosphere. The discovery adjusts models of planetary atmosphere evolution.

Birthplace of the domesticated chili pepper identified in Mexico

An international team of researchers, led by a plant scientist at the University of California, Davis, reports that the domesticated chili pepper originated in central-east Mexico. The region, extending from southern Puebla and northern Oaxaca to southeastern Veracruz, was previously thought to be less suitable for the crop's origins.

SourceUniversity of California - Davis·JournalProceedings of the National Academy of Sciences·DateApr 21, 2014