Feature
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A More Perfect Union
Forsaking life in the outside world, endosymbiotic bacteria of some insects traded freedom and nutrients for life inside a cell.
- Chemistry
Cosmic Chemistry Gets Creative
By simulating extraterrestrial impacts on Earth, researchers are firing away at the question of how life started.
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- Earth
Big Bergs Ahoy!
Although the break-up of Antarctica's northernmost ice shelves has been linked to warmer temperatures in the area, the cause of the unusual number of large icebergs calving from the continent's southern ice shelves last year was likely not global warming.
