Stars igniting at rates rarely seen in a distant, massive galaxy are blowing cold, dense gas tens of thousands of light years into space, depleting the galaxy's supply of stellar fuel. The loss will limit future star birth, a driver galactic aging for which evidence has been mounting.
A hinge in the RNA genome of the virus that causes hepatitis C works like a switch that can be flipped to prevent it from replicating in infected cells. Scientists have discovered that this shape is shared by several other viruses—among them one that kills cancer cells.
A self-driven reaction can assemble phospholipid membranes like those that enclose cells, a team of chemists at the University of California, San Diego, reports in Angewandte Chemie.
Scientists have created cells with fluorescent dyes that change color in response to specific neurochemicals. By implanting these cells into living mammalian brains, they have shown how neurochemical signaling changes as a food reward drives learning, they report in Nature Methods online October 26.
Physicists have come up have with a mathematical explanation for moths’ remarkable ability to find mates in the dark hundreds of meters away.
Cosmologists have made the most sensitive and precise measurements yet of the polarization of the cosmic microwave background.
Physics majors at the University of California, San Diego will have the opportunity to gain experience and training on the same high-tech tools that industry researchers use, thanks to contributions from Quantum Design. The San Diego-based technology company—which has strong alumni ties to the campus—is…
Four teams of scientists at UC San Diego will receive research grants from the National Institutes of Health that will help lay the groundwork for visualizing the circuits of the brain and how they work, the agency announced at a White House ceremony today.
Chemical fingerprints of the element nitrogen vary by extremes in materials from the molecules of life to the solar wind to interstellar dust. Ideas for how this great variety came about have included alien molecules shuttled in by icy comets from beyond our solar system and complex chemical scenarios.
Biochemists working at the University of California, San Diego, have developed a program that predicts the placement of chemical marks that control the activity of genes based on sequences of DNA. They describe their analysis and report results from its application to human embryonic cells in a paper…