Cathy Cahill

Feb. 22, 2013

How Wood Smoke Is Dirtying Alaska’s Air

Cathy Cahill, of the University of Alaska Fairbanks, discusses air quality in the Last Frontier.

air pollution, fires, wood burning, heating, smog, particulates, air quality

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Michael Pollan Talks Plants and Food

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Snowflake Safari

\tWinter weather means more than sledding and snowmen. Next snowstorm, grab a magnifying glass and try snowflake hunting. Bullet rosettes, stellar plates, and capped columns are just a few of the varieties of snow crystal you can find in your backyard. Kenneth Libbrecht, physicist at Caltech and snowflake expert, shares secrets of the snowflake.

\tVideo originally published on ScienceFriday.com on December 31, 2009

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