NASA has released video footage of a spacewalk to the International Space Station.
American astronauts Josh Cassada and Frank Rubio were tasked with installing two new solar arrays, a collection of solar panels, in a seven-hour operation.
The array was delivered by SpaceX's Dragon freighter on Nov. 27 and will power the ISS with up to 30% more power, generating a total of 120,000 watts of power during the orbital day, according to NASA.
In the Indian megacity of Mumbai, there is an urban forest four times the size of Central Park in New York.
It is home to a community of native people who live with leopards.
The land is prime real estate and parts have been converted over the last few decades.
Now the government is pushing ahead with a controversial plan to dig deeper into the forest to build a depot for the subways.
The project has sparked widespread protests and debates about conservation and development. We follow an indigenous family struggling to maintain their unique lifestyle.
Film produced by BBC News, Filament Pictures and Confluence Media
Scientists have identified a 43% decline in a large Adelie penguin population off Antarctica's east coast over the past decade.
Several years of extensive ice near the penguin colony are believed to have been the trigger, despite a general retreat in ice around Antarctica.
Video by Isabelle Rodd
An 18-year-old silverback gorilla settles into his new home at ZSL London Zoo.
Kiburi is an endangered western lowland weighing 193 kg.
It was transported from Loro Parque Zoo in Tenerife to London Heathrow Airport before arriving at its new enclosure at Gorilla Kingdom.
He was transferred as part of an international breeding program and is being gradually introduced to the zoo's female gorillas, Mjukuu and Effie.
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The BBC analysis team examines whether the UN goal of limiting global warming is still achievable.
The most powerful rocket ever launched by NASA was launched from Kennedy Space Center in Florida.
The first launch attempt in August was canceled due to technical problems. The same thing happened on a second attempt in early September.
Happy third time. Artemis I is part of NASA's plan to eventually bring humans back to the moon. For this test flight, the payload is non-human and includes a Shaun the Sheep toy.
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The BBC's analysis department examines whether the UN goal of limiting global warming is still achievable.