News tagged with proceedings of the national academy of sciences

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Researchers revise Darwin's thinking on invasive species

For more than a century and a half, researchers interested in invasive species have looked to Charles Darwin and what has come to be called his "naturalization conundrum." If an invader is closely related to species in a ...

Dec 02, 2013
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Migrating animals' pee affects ocean chemistry

The largest migration on the planet is the movement of small animals from the surface of the open ocean, where they feed on plants under cover of darkness, to the sunless depths where they hide from predators ...

Oct 09, 2014
3.6 / 5 (9) 1

Isotopic memory of atmospheric persistence

Chemical analysis of some of the world's oldest rocks, by an international team led by McGill University researchers, has provided the earliest record yet of Earth's atmosphere. The results show that the ...

Jan 15, 2015
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