08/22/2011 07:00:00
Marcus Woo

Astronomers at Caltech have discovered that the dwarf planet 2007 OR10—nicknamed Snow White—is an icy world, with about half its surface covered in water ice that once flowed from ancient, slush-spewing volcanoes. The new findings also suggest that the red-tinged dwarf planet may be covered in a thin layer of methane, the remnants of an atmosphere that's slowly being lost into space.

08/11/2011 07:00:00
Katie Neith

Like scars that remain on the skin long after a wound has healed, earthquake fault lines can be traced on Earth's surface long after their initial rupture. Typically, this line of intersection between the area where the fault slips and the ground is more complicated at the surface than at depth. But a new study by Caltech researchers of the April 4, 2010, El Mayor–Cucapah earthquake in Mexico reveals a reversal of this trend.

07/14/2011 07:00:00
Katie Neith

Edward M. Stolper, provost of the California Institute of Technology (Caltech) and William E. Leonard Professor of Geology, has been named a Foreign Member of Great Britain's Royal Society. He is one of eight scientists elected in 2011. Stolper’s election brings to six the number of foreign members of the Royal Society currently on the Caltech faculty.

06/28/2011 07:00:00
Katie Neith

Ever since a crash landing on Earth grounded NASA's Genesis mission in 2004, scientists have been gathering, cleaning, and analyzing solar wind particles collected by the spacecraft. Now, two new studies published in Science reveal that Earth's chemistry is less like the sun's than previously thought. 

06/23/2011 18:00:00
Marcus Woo

Were dinosaurs slow and lumbering, or quick and agile? It depends largely on whether they were cold or warm blooded. Now, a team of researchers led by Caltech has developed a new approach to take body temperatures of dinosaurs for the first time, providing new insights into whether dinosaurs were cold or warm blooded.

05/25/2011 07:00:00
Lori Oliwenstein

A team of scientists led by researchers from Caltech report in this week's issue of the journal Nature that the rocks on which much of a theory on how the "Snowball Earth" ice age ended was based were formed millions of years after the ice age ended, and were formed at temperatures so high there could have been no living creatures associated with them. 

05/18/2011 23:00:00
Katie Neith

When the magnitude 9.0 Tohoku-Oki earthquake and resulting tsunami struck off the northeast coast of Japan on March 11, they caused widespread destruction and death. Using observations from a dense regional geodetic network (allowing measurements of earth movement to be gathered from GPS satellite data), globally distributed broadband seismographic networks, and open-ocean tsunami data, researchers have begun to construct numerous models that describe how the earth moved that day.

05/03/2011 07:00:00
Marcus Woo

Caltech geologists John Grotzinger and Woody Fischer have been puzzling over a surprising and controversial discovery made in the early 1990s—a discovery that provided some clues as to what might have caused a sudden burst of biodiversity 540 million years ago.

04/15/2011 07:00:00
Katie Neith

For many people, Global Positioning System (GPS) satellite technology is little more than a high-tech version of a traditional paper map. Used in automobile navigation systems and smart phones, GPS helps folks find their way around a new neighborhood or locate a nearby restaurant. But GPS is doing much, much more for researchers at the California Institute of Technology (Caltech): it's helping them find their way to a more complete understanding of Earth's interior structure. 


04/06/2011 09:01:00
Katie Neith

For many years, most scientists studying Tibet have thought that a very hot and very weak lower and middle crust underlies its plateau, flowing like a fluid. Now, a team of researchers at the California Institute of Technology (Caltech) is questioning this long-held belief and proposing that an entirely different mechanism is at play.