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Life's history in iron

A new study examines how Earth's oldest iron formations could have been formed before oxygenic photosynthesis played a role in oxidizing iron.

dateNov 07, 2014 in Earth Sciences
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Living off the land in the final frontier

Safely sending human explorers to and from Mars will be the challenge of a generation. We don't yet know what clues astronauts will uncover in the Martian soil or atmosphere that reveal new knowledge about ...

dateNov 05, 2014 in Space Exploration
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