Clues about rainfall in the distant past — from river mud to tiny seashells — come to rest on the ocean floor. Sampling layers of sediment from the Indian Ocean will help researchers build an accurate picture of Indian monsoon activity going back 15 million years or more. Read about research conducted by Steve Clemens on a 2 month cruise on the JOIDES Resolution.
Gullies carved into impact craters on Mars provide a window into climate change on the Red Planet. A new analysis suggests Mars has undergone several ice ages in the last several million years. The driver of these climate swings is likely the Red Planet's wobbly axis tilt. Read the study, in press in the journal Icarus, by lead author Jay Dickson.
A dramatic increase in rainfall at the end of the last ice age marked the beginning of the African Humid Period. Researchers using complex modeling systems have figured out the forces that drove that transition, including an important role for greenhouse gasses. Prof. Jim Russell was a co-author of a study published in Science. He discussed his findings and their implications with Kevin Stacey.
Last weekend, about 100 undergraduate and graduate alumni gathered to celebrate the retirement of Professor Peter Schultz (Dept. of Earth, Environmental, and Planetary Sciences) at the historical Hope Club.
24 symposium speakers, including Brown alumni (now professors) from Japan and Alaska, presented their latest science research and connected their career trajectories to their experiences here at Brown, highlighting Prof. Schultz's influence on their lives.
How to reconcile indisputable evidence of flowing water on Mars with severely low temperatures? New research shows volcanism and greenhouse gas could have warmed the planet sufficiently, but only for tens or hundreds of years at a time. Read the paper co-authored by Professor Jim Head and published in Nature Geoscience.