Bursts of methane may have warmed early Mars

The presence of water on ancient Mars is a paradox. There's plenty of geographical evidence that rivers periodically flowed across the planet's surface. Yet in the time period when these waters are supposed to have run—three ...

'Toxic gases' as targets for new medicines

Gases once thought of only as environmental pollutants are now known to be produced by the body. They could potentially be used to develop drugs to treat diseases including heart failure and cancer.

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