Earth and Environment News

07/15/2014 14:23:55
Katie Neith
Just as growth rings can offer insight into climate changes occurring during the lifespan of a tree, corals have much to tell about changes in the ocean. At Caltech, climate scientists Jess F. Adkins and Nivedita Thiagarajan use manned submersibles, like Alvin operated by the Woods Hole Oceanographic Institution, to dive thousands of meters below the surface to collect these specimens—and to shed new light on the connection between variance in carbon dioxide (CO2) levels in the deep ocean and historical glacial cycles.
01/28/2014 11:36:26
Cynthia Eller
In Caltech's Earth Surface Dynamics Lab the behavior of rivers is modeled through the use of artificial rivers through which water can be pumped at varying rates over a variety of sediments.
01/17/2014 10:33:47
Cynthia Eller
Since the magnitude 6.7 Northridge earthquake 20 years ago, researchers at Caltech have learned much more about where earthquakes are likely to happen, and how danger to human life and damage to property might be mitigated when they do occur.
01/14/2014 09:05:07
Jessica Stoller-Conrad
"It was a tremendous surprise that the agent that drives metamorphosis is such an elaborate, well-organized injection machine," says coauthor Grant Jensen.
A rendered image of the porcupine-like array of phage tail-like contractile structures in P. luteoviolacea bacteria.
12/17/2013 08:45:39
Cynthia Eller

South-central Idaho and the surface of Mars have an interesting geological feature in common: amphitheater-headed canyons.

12/10/2013 09:06:30
Jessica Stoller-Conrad

Although researchers have determined the ages of rocks from other planetary bodies, the actual experiments—like analyzing meteorites and moon rocks—have always been done on Earth.

10/04/2013 12:16:37
Jessica Stoller-Conrad

DALE is nearly ready to face the judges.

09/16/2013 20:53:47
Douglas Smith
Bruce Churchill Murray, Caltech Professor of Planetary Science, Emeritus, and former head of NASA's Jet Propulsion Laboratory (JPL), succumbed to complications of Alzheimer's disease on August 29, 2013. He was 81.
08/27/2013 10:55:39
Jessica Stoller-Conrad
Caltech students and recent graduates take classroom knowledge to the construction site.
06/26/2013 10:27:37
Katie Neith
For most terrestrial life on Earth, oxygen is necessary for survival. But the planet's atmosphere did not always contain this life-sustaining substance, and one of science's greatest mysteries is how and when oxygenic photosynthesis—the process responsible for producing oxygen on Earth through the splitting of water molecules—first began. Now, a team led by geobiologists at the California Institute of Technology (Caltech) has found evidence of a precursor photosystem involving manganese that predates cyanobacteria, the first group of organisms to release oxygen into the environment via photosynthesis.
06/13/2013 11:17:56
Brian Bell

National Geographic Society has named Bethany Ehlmann, assistant professor of planetary science at the California Institute of Technology (Caltech), a 2013 Emerging Explorer.

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