Sallie (Penny) Chisholm

Jun. 13, 2008

Prochlorococcus

Just over twenty years ago, researchers discovered a photosynthetic marine microorganism now known as Prochlorococcus. In this segment, guest host Joe Palca talks with Penny Chisholm, a biologist at MIT who first reported the discovery of the tiny organi

prochlorococcys, photosynthesis, marine life,

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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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