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00:02:00
Bob Cannard, a Sonoma Valley farmer explains how compost is generated, both by nature and by human gardeners. Cannard creates a special compost 'tea' to use on his bountiful crops

00:00:38
Mike Wiltberger, magnetospheric physicist at the National Center for Atmospheric Research, narrates this artist’s rendering of a coronal mass ejecting from the sun and then impacting the earth’s magnetic field. Animation produced by the National Aeronautics and Space Administration.

00:00:40
This wobbly luminescent sculpture by Liz Hickok is both art work and a simulation of how a San Francisco neighborhood might jiggle when the Big One strikes.

00:03:02
Join us in Chaco Canyon to think about what we can learn from watching shadows.

00:03:43
The sun holds an honored place in the lives of Southwestern Native Americans. Hear insights into the importance of the sun from Dr. Shelly Valdez, educator at Laguna Pueblo; Dr. Isabel Hawkins, solar researcher at UC Berkeley; and Andrew Garcia Sr., coordinator of Tewa dancers.

00:00:24
Time-lapse footage of light moving across a pictograph at Wijiji 931.

00:00:27
Watch as the square of light moves across the wall and niches at Rinconada.

00:35:56
Meet Breea Govenar, a biologist at Penn State University, as she speaks to us from aboard a research vessel from Wood's Hole Oceanographic Institute. She'll discuss life near deep-sea thermal vents in the Pacific Ocean. The Webcast also includes Dr. Alissa Arp, a biologist from San Francisco State University studying the tube worms that live around these very hot marine spots.

1:03:16
In preparation for the 2004 landing of the Mars Exploration Rovers, NASA engineers and scientists tested their remote operation procedures using a rover called FIDO (field integrated design & operations rover). Our remote team traveled to the desert test site to see what they learned in the desert and what they hoped to learn on Mars.