Debris falling from the sky: More often, more risk

It is still not clear what exactly fell onto a Kenyan village last month, but such events are likely to become increasingly common given the amount of space debris drifting above the planet.

A quarter of freshwater species face extinction: Study

A quarter of freshwater animals, including fish, insects and crustaceans, are at high risk of extinction due to threats including pollution, dams and farming, according to a new study published on Wednesday.

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