Thailand reverses ban on weed killer linked to cancer

Thailand reversed a decision Wednesday to ban a controversial weedkiller and extended the permitted use of two other pesticides for six months, following pushback from its multi-billion dollar agriculture industry.

Slash emissions now or face climate disaster, UN warns

The world will miss its chance to avert climate disaster without an immediate and all-but-impossible fall in fossil fuel emissions, the UN said Tuesday in its annual assessment on greenhouse gases.

Could we intercept interstellar comet C/2019 Q4 Borisov?

When 'Oumuamua passed through our solar system two years ago, it set off a flurry of excitement in the astronomical community. Here was the first-ever interstellar object that be observed by human trackers, and the mysteries ...

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