Methane comes in different isotopic signatures. Methane from fossil fuels like natural gas leaks or coal mines is heavier, ...

How can artificial intelligence be used to help police solve crime? Neil and Beth discuss this and teach you some new vocabulary. And I'm Neil. Don't forget that you can find a transcript and a quiz ...

The court ruled that it was unconstitutional to bar state agencies from investing with firms that the state had accused of boycotting the oil industry. By Karen Zraick Federal agencies are delaying ...

The global water crisis affects everyone – but not equally. Where people lack safe drinking water and sanitation close to home, inequalities flourish, with women and girls bearing the brunt. They ...