Latest Stories

04/20/2014 06:30:10
Jessica Stoller-Conrad
An experiment just launched into orbit by Caltech researchers could be an important step toward understanding the protein that causes Huntington's disease—a devastating and untreatable hereditary disorder.
04/17/2014 14:35:06
Katie Neith
Starting on July 1, 2014, John Dabiri, professor of aeronautics and bioengineering, will serve as Caltech's dean of undergraduate students.
04/18/2014 10:47:54
Cynthia Eller
Number theorists are particularly interested in prime numbers (those integers that cannot be divided by any number other than itself and 1) and Diophantine equations. Diophantine equations are polynomial equations (those with two or more variables) in which the coefficients are all integers. It is these equations that are the inspiration for a recent proof offered by Dinakar Ramakrishnan, Caltech's Taussky-Todd-Lonergan Professor of Mathematics and executive officer for mathematics, and his coauthor, Mladen Dimitrov, formerly an Olga Taussky and John Todd Instructor in Mathematics at Caltech and now professor of mathematics at the University of Lille in France. What Ramakrishnan and Dimitrov showed is that a specific collection of systems of homogeneous equations with six variables has only a finite number of rational solutions (up to scaling).
04/16/2014 14:25:50
Katie Neith
As reported in a paper published online today in the journal Nature, Caltech biologist David J. Anderson and his colleagues have genetically identified neurons that control aggressive behavior in the mouse hypothalamus, a structure that lies deep in the brain. Researchers have long known that innate social behaviors like mating and aggression are closely related, but the specific neurons in the brain that control these behaviors had not been identified until now.
04/16/2014 08:41:15
Jessica Stoller-Conrad
Caltech biologist Elliot Meyerowitz and colleagues have found that the unusual shape of pavement cells, found on the leaves of flowering plants, represents a state of balance—an individual cell's tug-of-war to maintain structural integrity while also dynamically responding to the pushes and pulls of mechanical stress.
04/10/2014 11:49:39
Jessica Stoller-Conrad
Caltech researchers uncover a mechanism for how fruit flies regulate their flight speed, using both vision and wind-sensing information from their antennae.
A tracing of flight trajectories of fruit flies.
04/10/2014 11:49:23
Kimm Fesenmaier

A lot can happen to a rock over the course of two and a half billion years. It can get buried and heated; fluids remove some of its minerals and precipitate others; its chemistry changes.

04/09/2014 12:03:52
Cynthia Eller
"As an expert on the geopolitics of energy, Dan Yergin has examined the interface of science and public policy in depth," says Ed Stolper, interim president of Caltech. "Caltech students will benefit from being challenged to put the scientific work for which they have been preparing into a broader social context. We are excited to bring him to campus for commencement in June."
04/07/2014 15:02:47
Cynthia Eller

It is a banner spring in Pasadena for the classical Greek mathematician Archimedes of Syracuse.

04/15/2014 07:11:10
Jessica Stoller-Conrad
Alexander Varshavsky, Howard and Gwen Laurie Smits Professor of Cell Biology at Caltech, has been named the recipient of the 2014 Albany Medical Center Prize in Medicine and Biomedical Research.
04/03/2014 11:00:06
Kimm Fesenmaier
In 2005, NASA's Cassini spacecraft sent pictures back to Earth depicting an icy Saturnian moon spewing water vapor and ice from fractures, known as "tiger stripes," in its frozen surface. It was big news that tiny Enceladus—a mere 500 kilometers in diameter—was such an active place. Since then, scientists have hypothesized that a large reservoir of water lies beneath that icy surface, possibly fueling the plumes. Now, using gravity measurements collected by Cassini, scientists have confirmed that Enceladus does in fact harbor a large subsurface ocean near its south pole, beneath those tiger stripes.
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