Latest UC Berkeley Stories

2010-06-25 10:16:06

Experiment tests underpinnings of quantum field theory, Bose-Einstein statistics of photons Of all the assumptions underlying quantum mechanics and the theory that describes how particles interact at the most elementary level, perhaps the most basic is that particles are either bosons or fermions. Bosons, such as the particles of light called photons, play by one set of rules; fermions, including electrons, play by another. Seven years ago, University of California, Berkeley, physicists asked...

2010-06-02 08:14:25

Secretive Hemidactylus fasciatus is actually 4 species distributed in forest patches across W. Africa The West African forest gecko, a secretive but widely distributed species in forest patches from Ghana to Congo, is actually four distinct species that appear to have evolved over the past 100,000 years due to the fragmentation of a belt of tropical rain forest , according to a report in this week's issue of the journal Proceedings of the Royal Society B. The discovery by former University of...

2010-05-31 07:32:46

Researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC), Berkeley, have successfully attached imaging probes to glycans "“ the sugar molecules that are abundant on the surfaces of living cells "“ in the embryos of zebrafish less than seven hours after fertilization. Glycans are key regulators of the processes that guide cell development, and zebrafish are a top vertebrate model organism of...

2010-05-25 07:10:00

Solar physicists at the University of California, Berkeley, have captured for the first time the collision of a comet with the sun. Using instruments aboard NASA's twin STEREO spacecraft, four post-doctoral fellows at UC Berkeley's Space Sciences Laboratory were able to track the comet as it approached the sun and estimate an approximate time and place of impact. STEREO (Solar TErrestrial RElations Observatory), launched in 2006, consists of identical spacecraft orbiting the sun, one ahead of...

2010-05-25 07:07:07

Study shows impact to pregnancies in women with no direct connection to events Stress caused by psychological shock from the Sept. 11, 2001 terrorist attacks, felt even by people with no direct link to the event, may have led to an increase in male children being miscarried in the U.S. Tim Bruckner, assistant professor of public health at UC Irvine, and colleagues at UC Berkeley found that the fetal death rate for males spiked in September 2001 and that significantly fewer boys were born than...

2010-05-24 14:48:26

New action mechanism for topoisomerases could help improve antibiotics, anticancer drugs Many standard antibiotics and anti-cancer drugs block the enzymes that snip the kinks and knots out of DNA "“ DNA tangles are lethal to cells "“ but the drugs are increasingly encountering resistant bacteria and tumors. A new discovery by University of California, Berkeley, biochemists could pave the way for new research into how to re-design these drugs to make them more effective poisons for...

2010-05-19 13:32:35

In the past decade, robotic telescopes have turned astronomers' attention to scads of strange exploding stars, one-offs that may or may not point to new and unusual physics. But supernova (SN) 2005E, discovered five years ago by the University of California, Berkeley's Katzman Automatic Imaging Telescope (KAIT), is one of eight known "calcium-rich supernovae" that seem to stand out as horses of a different color. "With the sheer numbers of supernovae we're detecting, we're discovering weird...

2010-04-29 15:05:00

A team of scientists led by the Department of Energy's Joint Genome Institute (JGI) and the University of California, Berkeley, is publishing this week the first genome sequence of an amphibian, the African clawed frog Xenopus tropicalis, filling in a major gap among the vertebrates sequenced to date. "A lot of furry animals have been sequenced, but far fewer other vertebrates," said co-author Richard Harland, UC Berkeley professor of molecular and cell biology. "Having a complete catalog of...

2010-03-26 07:51:59

Knocking out apoptosis genes is critical, but so is revving up insulin pathway University of California, Berkeley, biologists have found a signal that keeps stem cells alive in the adult brain, providing a focus for scientists looking for ways to re-grow or re-seed stem cells in the brain to allow injured areas to repair themselves. The researchers discovered in fruit flies that keeping the insulin receptor revved up in the brain prevents the die-off of neural stem cells that occurs when...

2010-03-11 07:40:00

Sloan Digital Survey data provide test that rules out alternative theories of gravity An analysis of more than 70,000 galaxies by University of California, Berkeley, University of Zurich and Princeton University physicists demonstrates that the universe "“ at least up to a distance of 3.5 billion light years from Earth "“ plays by the rules set out 95 years ago by Albert Einstein in his General Theory of Relativity. By calculating the clustering of these galaxies, which stretch...

Latest UC Berkeley Reference Libraries

2009-07-14 16:50:21

Einsteinium is a metallic synthetic element with the symbol Es and atomic number 99. It became the seventh transuranic (atomic number higher than 99) element produced. It was named for Albert Einstein. It is an element found within the actinoid series which includes Actinium. Though it has only been produced in small amounts, it has been accurately determined to be silver in coloration. Like all synthetic elements, einsteinium isotopes are highly radioactive and are extremely toxic. Besides...

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Word of the Day
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.