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Running Time:
00:03:32
From a small rubber boat on a Greenlandic lake, climate researcher Billy D'Andrea introduces some of the equipment scientists use in limnological sampling. (Limnology is the study of freshwater systems, like lakes.)

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: July 14, 2008
Format: Expedition
Category: Science in Action
Subject(s): Geology/Earth Science, Life Science/Biology
Running Time:
00:03:36
To understand how Earth’s climate system has changed over time, scientists need to find, develop and use natural recorders of temperature and precipitation. One natural thermometer comes in the form of alkenones: trans-fats produced by certain algae.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: July 7, 2008
Format: Expedition
Category: Science in Action
Subject(s): Geology/Earth Science, Life Science/Biology
Running Time:
00:32:24
Chris McKay, Planetary Scientist at the NASA Ames Research Center, has traveled the world seeking Mars-like environments. In the Dry Valleys of Antarctica—his favorite Mars analog on Earth—Dr. McKay discovered a kind of algae living inside rocks porous to light and water. He’ll show us some of these rocks and talk about the physical conditions required for life.

Project: Origins: Astrobiology: The Search for Life | Browse All

Date: November 19, 2003
Format: Interview
Category: Science in Action
Subject(s): Astronomy/Space Science