Related topics: climate change

What's under this hole on the surface of Mars?

Human visitors to Mars need somewhere to shelter from the radiation, temperature swings, and dust storms that plague the planet. If the planet is anything like Earth or the moon, it may have large underground lava tubes that ...

Tracking down toxic metals from tobacco smoke

Cigarette smoke has been studied for years, revealing a multitude of contaminants, including toxic metals. But exactly which of those metals can be traced to secondhand or thirdhand smoke?

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