Alfred McEwen

Aug. 05, 2011

Scientists Spot Signs of Salty Water on Mars

Are temporary streaks on Martian hillsides a sign of salty water?

mars, water, planet, space

Sep. 19, 2008

Mars

In this segment, we'll get the big picture on science on the planet Mars. From orbiting observatories to roving rovers to the ditch-digging Phoenix -- what have planetary scientists learned about Mars, and what remains to be discovered?

mars, planet, planetary exploration

Sep. 21, 2007

Mars Update

We get an update on the latest results from orbiting observations of Mars.

mars, space, water, astrobiology

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Michael Pollan Talks Plants and Food

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Happy National Moth Week!

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Mystery Box

The Myth of the Woolly Bear

\tLegend holds that the length of a woolly bear caterpillar’s color bands can be used to forecast how severe the winter weather will be. The myth dates back to colonial American folklore but was popularized by a 1948 study. SciFri finds out if there’s any truth to the lore, and what the caterpillar’s fuzzy bristles are really used for.

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