last updated 7/29/08

July 2008
Videocast: Earthquake strikes Los Angeles posted 7/29/08
Videocast: A whale of a wind turbine posted 7/25/08
Videocast: Dig It! The new Smithsonian Soils Exhibit  posted 7/21/08
Videocast: Utah mine collapse source of “earthquake”  posted 7/8/08

June 2008
Videocast: Save the Robot, Save the World posted 6/27/08
Videocast: The nation's ecosystems posted 6/20/08
Videocast: Platinum from the deep posted 6/18/08
Videocast: Ocean temperature gaffe posted 6/09/08
Videocast: Black gold agriculture posted 6/5/08

May 2008
Videocast: Is the nitrogen cycle out of whack? posted 5/20/08
Videocast: Chaitén eruption posted 5/12/08

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