Valery Polyakov took the longest-ever spaceflight, clocking up 437 continuous days in the 1990s.
Read moreBy James FitzGerald
BBC News
BBC News Science & Environment
Climate change threatens survival of urban forests
Oaks, maples and chestnuts found in cities are among over 1,000 tree species that are flagged at risk.
Top Stories
Climate change threatens survival of urban forests
Oaks, maples and chestnuts found in cities are among over 1,000 tree species that are flagged at risk.
Nasa's Mars rover collects 'amazing' rock samples
The Perseverance robot is close to completing its first set of objectives on Mars.
Global drought: Is 2022 the driest year on record?
Heatwaves hit China, Europe and the US, causing lakes and rivers to dry up. Is this year the driest ever?
The extraordinary life in the depths of the ocean
Join us as we take a dive down, right down, to the bottom of the ocean. What's down there?
Kerry: I hope Charles will push for climate action
The US presidential envoy says the King can "leverage" the action needed to tackle global warming.
Colourful songbirds could be traded to extinction
The wild bird trade is set to make tropical forests "drab", a study shows.
Cheetahs make a return to India after 70 years
A group of eight cats arrived from Namibia on the occasion of PM Narendra Modi's birthday.
Featured Contents
Climate change threatens survival of urban forests
Oaks, maples and chestnuts found in cities are among over 1,000 tree species that are flagged at risk.
Nasa's Mars rover collects 'amazing' rock samples
The Perseverance robot is close to completing its first set of objectives on Mars.
Global drought: Is 2022 the driest year on record?
Heatwaves hit China, Europe and the US, causing lakes and rivers to dry up. Is this year the driest ever?
The extraordinary life in the depths of the ocean
Join us as we take a dive down, right down, to the bottom of the ocean. What's down there?
Kerry: I hope Charles will push for climate action
The US presidential envoy says the King can "leverage" the action needed to tackle global warming.
Colourful songbirds could be traded to extinction
The wild bird trade is set to make tropical forests "drab", a study shows.
Cheetahs make a return to India after 70 years
A group of eight cats arrived from Namibia on the occasion of PM Narendra Modi's birthday.
Nasa's Mars rover collects 'amazing' rock samples
The Perseverance robot is close to completing its first set of objectives on Mars.
Global drought: Is 2022 the driest year on record?
Heatwaves hit China, Europe and the US, causing lakes and rivers to dry up. Is this year the driest ever?
The extraordinary life in the depths of the ocean
Join us as we take a dive down, right down, to the bottom of the ocean. What's down there?
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