When a road was built through the forest where the orangutans lived in Indonesia's Sumatra, it split the Sumatran orangutan community in two and lead to fears that inbreeding could cause health implications and eventual extinction.

Conservation groups the Sumatran Orangutan Society (SOS) and Tangguh Hutan Khatulistiwa, with the help of the government, built a canopy bridge in the hope the orangutan communities would use it to pass between the two forest sides.

However, the bridge remained unused for two years - that was until one orangutan braved the crossing and made it to the other side.

Helen Buckland, chief executive of SOS, told the BBC how the long anticipated and exciting crossing could vastly change things for the primates.

Video Emaan Warraich.

Newly released video shows the moment the hatch of Artemis II's Orion capsule is unlocked to a joyful reunion with the four astronauts.

Steve Backshall spotted two of the UK's last surviving orcas which he described as one of his "greatest British wildlife moments".

The 98m tall Space Launch System (SLS) and Orion spacecraft made a four mile journey from their assembly building to Pad 39B at the Kennedy Space Center in Florida.

Tenerife hit by snow as Storm Therese batters Canary Islands

BBC science correspondent Pallab Ghosh explains what happens if an astronaut gets ill in space.

From meteor showers to supermoons, here are some of the sights that wowed stargazers this year.

The Met Office has issued yellow severe weather warnings for both wind and rain.

Baroness Kathy Willis talks about the importance of green and blue spaces in cities.

Studying samples from the ice sheet gives an environmental record of over a million years.

President Trump has suggested this week that wind power is the reason for rising energy bills in the UK. BBC Verify's Ben Chu takes a look at the data.

London Zoo in Regent's Park holds its annual animal weigh-in, with zookeepers weighing and measuring over 10,000 animals to monitor their health and wellbeing.

The astronomical event was captured on camera at North York Moors National Park on 13 August.

Storm Floris to bring 'unseasonably strong gusty' wind to UK

Researchers studying planet K2-18b's atmosphere have detected signs of molecules which on Earth are only produced by simple organisms.

The all-female crew are back on Earth after reaching space on Jeff Bezos' Blue Origin rocket.