Submitted by Anonymous (not verified) on Tue, 2001-05-22 07:00
PASADENA, Ca.— Proteins are the cell's arbiters. In a complex and still largely mysterious cascade of events, proteins tell a cell when to divide and grow—and when to die. To properly control cell behavior, proteins need to be turned on when they are needed, and turned off when they are not. Now a California Institute of Technology biologist and his colleagues have shed important new light on how this takes place in animals and plants.
Submitted by debwms on Wed, 2001-05-02 07:00
California Institute of Technology researchers have received a $100,000 grant from the Alice C. Tyler Perpetual Trust to study the human impact on land and water in the San Gabriel Valley and San Gabriel River watershed. Ecosystems bordering major metropolitan areas are subject to intense pressures from pollutants produced by transportation, industrial activities, power generation, and recreational activities. This project will measure and document these environmental changes in order to predict future impacts.
Submitted by Anonymous (not verified) on Mon, 2001-04-30 07:00
Cosmologists from the California Institute of Technology and their international collaborators have discovered the presence of acoustic "notes" in the sound waves that rippled through the early universe.
The existence of these harmonic peaks, discovered in an analysis of images from the BOOMERANG experiment, further strengthens results last year showing that the universe is flat. Also, the new results bolster the theory of "inflation," which states that the universe grew from a tiny subatomic region during a period of violent expansion a split second after the Big Bang.
Submitted by Anonymous (not verified) on Thu, 2001-04-19 07:00
Gasoline averaging $3 per gallon? Oil drilling in an Alaskan wildlife reserve? A need to relax air quality standards? It seems the long-term future of fossil fuels is bleak. One promising solution scientists have been studying is fuel cells, but they've had limitations too. Now, in the April 19 issue of the science journal Nature, the California Institute of Technology's Sossina M. Haile reports on a new type of fuel cell that may resolve these problems.
Submitted by Anonymous (not verified) on Tue, 2001-04-17 07:00
Scientists have revived and modernized a nearly forgotten technique for monitoring Earth's climate by carefully observing "earthshine," the ghostly glow of the dark side of the moon.
Earthshine measurements are a useful complement to satellite observations for determining Earth's reflectance of sunlight (its albedo), an important climate parameter. Long-term observations of earthshine thus monitor variations in cloud cover and atmospheric aerosols that play a role in climate change.
Submitted by Anonymous (not verified) on Fri, 2001-04-13 07:00
Owls have long been known for their stunning ability to swoop down in total darkness and grab unsuspecting prey for a midnight snack.
In the April 13 issue of the journal Science, neuroscientists from the California Institute of Technology report that an owl locates prey in the dark by processing two auditory signal cues to "compute" the position of the prey. This computation takes place in the midbrain and involves about a thousand specialized neurons.
Submitted by Anonymous (not verified) on Tue, 2001-04-10 07:00
Seven in 10 Americans think the Bush administration's proposed tax cuts would mainly benefit the wealthiest taxpayers, according to a national poll conducted by the University of Southern California and the California Institute of Technology's joint Center for the Study of Law and Politics (CSLP).
Submitted by Anonymous (not verified) on Wed, 2001-04-04 07:00
A gamma-ray burst detected in February has led astronomers to a galaxy where the equivalent of 500 new suns is being formed each year.
The discovery of a new "starburst galaxy," made by researchers from the National Radio Astronomy Observatory and the California Institute of Technology, provides support for the theory that gamma-ray bursts are caused by exploding young massive stars. Details of the discovery are being presented today at the Gamma 2001 conference.
Submitted by Anonymous (not verified) on Thu, 2001-03-08 08:00
Though the dinosaurs fared poorly in the comet or meteor impact that destroyed two-thirds of all living species 65 million years ago, new evidence shows that various other forms of life rebounded from the catastrophe in a remarkably short period of time.
Submitted by Anonymous (not verified) on Fri, 2001-03-02 08:00
Some inventors hope to build a better mousetrap, but California Institute of professor of biology Henry Lester's grand goal is to build a better mouse.
Not that the everyday laboratory mouse is inappropriate for a vast variety of biological and biomedical research. But for Parkinson's disease research, it has become clear that a strain of mutant mice with "slight" alterations would be a benefit in future medical studies. And not only would the mutant mice be useful for Parkinson's, but also for studies of anxiety and nicotine addiction.