climate change

​Two prominent environmental thinkers and activists will address climate change, biodiversity and pollution during a lecture at 7 p.m. April 10 in Whitaker Hall Auditorium at Washington University in St. Louis. The lecture titled “To Hell in a Handbasket?: The Global Environment and Sustainability” is free and open to the public. The primary sponsors are University College — the adult, evening and continuing education division in Arts & Sciences — and the International Affairs program in University College.

For his undergraduate thesis project, senior Thomas Muschninski working with professor of physics Jonathan Katz published an article in Nature Climate Change showing that the signature of an increase in storminess could be extracted from precipitation data for the Olympic Peninsula in Washington State. The scientists suspect the same signature lies hidden under naturally stormier weather at other locations as well.

Two biologists at Washington University in St. Louis were delighted to discover a meticulous dataset on a plant-pollinator network recorded by Illinois naturalist Charles Robertson between 1884 and 1916. Re-collecting part of Robertson’s network, they learned that although the network has compensated for some losses, battered by climate change and habitat loss it is now weaker and less resilient than in Robertson’s time.

Ralph J. Cicerone, PhD, president of the National Academy of Sciences and chair of the National Research Council, will present a seminar on climate change at Washington University in St. Louis at 4 p.m. Monday, Jan. 23, in Room 300, Laboratory Sciences Building on the Danforth Campus.

People head to the beach to escape the stress of everyday life, but a new study out of the Brown School at Washington University In St. Louis finds that there are peak times to reap the restorative benefit. “Mild temperature days and low tides offer the most restorative environments when visiting the beach,” says J. Aaron Hipp, PhD, environmental health expert and assistant professor at the Brown School.

A team of researchers, including earth and planetary scientists from Washington University in St. Louis, for the first time has been able to reconstruct both ocean temperature and general ice thickness of massive glaciers during one of the biggest mass extinctions in history hundreds of millions of years ago. The extinction, which occurred between 445 and 443 million years ago in the Late Ordovician Period, is one of the five biggest mass extinctions in Earth history, wiping out an estimated 75 percent of simple marine species.

Image courtesy USGSA team of geologists from China and the United States, including two from WUSTL, report evidence of at least three ice ages occurring between 750 and 600 million years ago.Glaciers reached Cape Cod, Massachusetts, in the most recent ice age about 20,000 years ago. But much harsher ice ages hit the Earth in an ancient geological interval known as “the Cryogenian Period” between 750 and 600 million years ago. A team of geologists from China and the United States, including two from Washington University in St. Louis, now report evidence of at least three ice ages during that ancient time.