Submitted by abenter on Thu, 2012-09-27 13:04
An ankle- or hip-deep stream once flowed with force across the surface of Mars in the very spot where NASA's Curiosity rover is currently exploring. The finding, announced by members of the project's science team today at the Jet Propulsion Laboratory (JPL), provides new information about a once wet environment in Gale Crater, the ancient impact crater where the rover touched down in early August.
Submitted by kfesenma on Wed, 2012-09-12 07:00
Several hypotheses have been proposed to explan how clay minerals detected on the surface of Mars were formed. Now, publishing in the journal Nature Geoscience, a team of French and American scientists including Caltech's Bethany Ehlmann, has suggested a new possibility. The Los Angeles Times recently spoke to Ehlmann about the paper and its implications.
Submitted by kfesenma on Wed, 2012-09-05 07:00
Today, September 5, marks the 35th anniversary of the launch of Voyager 1, which lifted off in 1977 on a Titan III–Centaur launch system just 16 days after its twin, Voyager 2. Now 11 billion and 9 billion miles from the sun, respectively, the spacecraft are the farthest-flung man-made objects, traveling every 100 days a distance equal to that between sun and Earth.
Submitted by ksvitil on Mon, 2012-09-03 19:01
Scientists and engineers around the world are working to find a way to power the planet using solar-powered fuel cells. Such green systems would split water during daylight hours, generating hydrogen that could be stored and used later to produce water and electricity. But robust catalysts are needed to drive the water-splitting reaction. Now Caltech chemists have determined the mechanism by which some highly effective cobalt catalysts work.
Submitted by mwoo on Tue, 2012-08-28 07:00
As an animal develops from an embryo, its cells take diverse paths, eventually forming different body parts—muscles, bones, heart. In order for each cell to know what to do during development, it follows a genetic blueprint, which consists of complex webs of interacting genes called gene regulatory networks. Now, for the first time, biologists at Caltech have built a computational model of one of these networks.
Submitted by mwoo on Sun, 2012-08-26 07:00
A team led by scientists at the California Institute of Technology (Caltech) has made the first-ever mechanical device that can measure the mass of individual molecules one at a time.
Submitted by kfesenma on Thu, 2012-08-23 18:00
Caltech researchers have shown for the first time that a specific sugar, known as GlcNAc ("glick-nack"), plays a key role in helping cancer cells grow rapdily and survive under harsh conditions. The finding suggests new potential targets for therapeutic intervention.
Submitted by katien on Tue, 2012-08-21 07:00
The frontal lobes are the largest part of the human brain, and damage to this area can result in profound impairments in reasoning and decision making. To find out more about what different parts of the frontal lobes do, neuroscientists at Caltech teamed up with researchers at the world's largest registry of brain-lesion patients. By mapping the brain lesions of these patients, the team was able to show that reasoning and behavioral control are dependent on different regions of the lobes than the areas called upon when making a decision.