The Prehistoric Forests of the Frozen Continent
Dating The East Antarctic Ice Sheet
Methane Munching Microbes
Ancient Ice Levels
Science / Ice and Snow
Thursday April 20, 2017
Today, a massive sheet of ice covers nearly all of West Antarctica, but it hasn't always been that way. Over the past few hundred thousand years, researchers think that the ice sheets have waxed and waned, varying in size as the region's climate changed. To gather evidence of how dynamic the ice cover has been in the past, John Stone of the University of Washington and his team traveled to a remote region of the continent this past season.
Seals Don't Waste their Breath
Science / The Biological World
Monday March 27, 2017
The ubiquitous Weddell seals that live around McMurdo Station are the region's undisputed diving champs, able to hold their breath for 90-plus minutes. That's at least three times as long as any other air-breathing animal in the region. It's an impressive feat, and how they're able to stay under for so long is what Emmanuel Buys and his team have been investigating over the past two seasons in Antarctica.
Tracking Earth's Past Magnetic Moments
Science / Earth
Tuesday March 14, 2017
The key to understanding Earth's prehistoric magnetic field lies hidden in the rocks. Specifically, igneous rocks, basalts that cooled from liquid magma spewed out of volcanos. Geologist Lisa Tauxe of the University of California, San Diego, and her team, traveled to Antarctica to collect rock samples that can tell them more about the planet's magnetic field over the past few million years. The research was funded by the National Science Foundation, which manages the U.S. Antarctic Program.