Related topics: evolutionary biology

Mars Icebreaker Life mission

Missions to Mars have only scratched its surface. To go deeper, scientists are proposing a spacecraft that can drill into the Red Planet to potentially find signs of life.

Southern butterflies move north

Native butterflies are vanishing from parts of the Northeast, a Harvard University study finds, while warmer-natured southerners are increasingly invading their turf. This coincides with a half-century warming trend in the ...

Spotting alien life: How 'microfossils' can fool scientists

Earth's oldest fossils may be billions of years old—although such claims are highly controversial. These kinds of discoveries usually start with finding what appear to be preserved outlines of microscopic lifeforms that ...

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