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US sanctions, failing banks, and the drying up of foreign aid have left Afghanistan's economy in tatters.

President Putin has been stoking fears that he will use tactical nuclear weapons in the Ukraine war.

What might Putin want, to be able to come out of the war looking good in the eyes of Russia's majority?

It was feared Mark Vande Hei might be left behind due to tensions over Russia's Ukrainian invasion.

The US town of Valmeyer relocated decades ago after devastating floods. It may have lessons for communities forced to consider a retreat from climate impacts today.

Engineers align the mirrors of the $10bn observatory to produce a pin-sharp image of a star.

Women and men are increasingly turning to prostitution to pay the bills, despite official denials.

The developers of a powerful mini aircraft hope it will be used by the armed forces.

Vegan cheese is now ubiquitous, but few people seem to know what it's actually made of. Here's the lowdown on this delicious-yet-enigmatic substance.

Researchers say they have solved one of science's biggest paradoxes, first identified by Prof Stephen Hawking.

The Space Launch System vehicle rolls out for a practice countdown ahead of a flight this summer.

With the Sunshine Protection Act, the clock may be ticking on clock switching in the US every year.

Because of his miscalculations, there's a new iron curtain at the Russian leader’s door - writes Allan Little

During the Cold War, both the US and USSR researched liquid hydrogen as a way to fuel aircraft. Could this cleaner fuel finally be around the corner?

Check Out Subcultured's Anime Episode on PBS Voices: https://youtu.be/oSCj8H4TGToTake the Space Time Fan Survey Here: https://forms.gle/wS4bj9o3rvyhfKzUAPBS ...

Videos of Putin and Zelensky declaring the war is over have been circulating online.

The cities turning to huge heat pumps to provide warmth to thousands of homes and businesses.

Your sex mindset can dictate how you deal with problems in the bedroom, with huge consequences for relationship quality.

From Neolithic times to the latest architecture, it is a mysterious symbol. Beverley D'Silva explores how the spiral has influenced artists, thinkers and designers for millennia.

Why sales of very basic mobile phones, without apps and internet connection, are increasing.

Dozens more are injured in the crash, which the mayor of the town says is a "national catastrophe".

Experts say the UK should reduce the amount of toxic "forever chemicals" allowed in drinking water.

When mums leave their kids with family or partners, they are often viewed as deeply flawed, despite gains in gender equity. Will this ever change?

Back in the 1990s, the hole in the planet's ozone layer was a pressing global crisis – if we had ignored it, today there would be several.