USGS CoreCast

Kasatochi Volcano in Alaska's Aleutian Islands is erupting, so USGS volcano scientist Marianne Guffanti fills us in on the situation.

A huge sinkhole in Texas begs a few questions about this fascinating and sometimes hazardous phenomenon, so we sit down with USGS geologist Randy Orndorff to learn more.

A magnitude-5.2 earthquake struck in southern Illinois on April 18, 2008.

Harley Benz, Scientist-in-Charge at the USGS National Earthquake Information Center, fills us in with the details.

The USGS has determined that the Bakken Formation, in North Dakota and Montana, has 25 times more technically recoverable oil than was estimated in the USGS's 1995 assessment.

We sit down with USGS scientists Brenda Pierce and Rich Pollastro to learn more.

In this video podcast, USGS experts give preliminary observations on what took place during the high flow experiment. Time lapse videos and photos available.

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Dams don't help just by holding water back. By opening Glen Canyon Dam's jet tubes for a high flow experiment—scheduled to take place on March 5—scientists can study and improve resources in Grand Canyon National Park. Learn more by listening to our interview with John Hamill, USGS Grand Canyon Monitoring and Research Program Chief.

Go to the bottom of the "Show Details" to see an amazing high-res image of Glen Canyon Dam releasing water.

Three scientists talk about lesser-known topics that were brought to light in the media in 2007 by the USGS Science Picks, including the loss of coastal wetlands, leaping carp, and evolutionary teamwork.

We also preview CoreFacts, the quick science Q & A we'll offer every weekday starting February 4th. Subscribe at www.usgs.gov.podcasts.

We talk with USGS's Stephen Peters about the newly released preliminary assessment of non-fuel mineral resources in Afghanistan and how they're a critical part of rebuilding its natural resource sector and economic stability.

In this fourth installment of our Earth Science Week series, scientist Randy Orndorff gives us the lowdown on how geologic maps show what's down low, and he explains how these maps and the USGS's new geologic time scale and colors benefit planning, development, industry, and you.