E23 – Between a Varnished Rock and a Hard Place

Scientists have been testing whether life exists on Mars for over 40 years, ever since the Viking 1 lander touched down on the Red Planet. Researchers often perform experiments on Earth to better understand the context of data collected by Viking 1 and subsequent landers – data that gives scientists tantalizing clues about the habitability of the Martian surface.

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E14 – Footprints from an Ancient World

Renata Netto spends a lot of time on beaches. The Brazilian scientist is an ichnologist, a specialist in the traces of ancient animal behaviors preserved in fossilized footprints, trackways, burrows, nests and other impressions.

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