Watch: How one orangutan braved new bridge to unite his split community

The forest where the Sumatran orangutans live has been split by a road. Copyright current_year BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking. Copyright current_year BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking. Orangutan crossing a bridge in the forest. Watch: How one orangutan braved new bridge to unite his split community 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. France's Eiffel Tower and Barcelona's Sagrada Família Basilica were among the famous global landmarks that went dark for an hour on Saturday night. Cameras capture a "resident pine marten" at the home of the Northern Ireland Assembly. The animal rights activist has died aged 91, after a pioneering career studying chimps. Bird lovers dressed up and took to the stage to mimic rhythmic calls in a competition aimed at promoting conservation awareness. Beavers disappeared from Britain about 400 years ago after being hunted to extinction. Most of the UK's wild parakeet population can be found in south-east England - but some have come to Belfast. A wildlife expert says it is "absolutely fantastic" to see an otter in such a "highly urbanised" area. Beavers captured from Scotland are released into the wild in England for the first time. In the UK more than 100 million bags of rubbish get sent to landfill each Christmas. Works to digitise and preserve plant samples are about three quarters complete. The camera live-streams from the heart of England’s largest grey seal colony. Three astronauts from the Shenzhou-18 mission landed in north China after six months aboard the Tiangong space station. Mini was rescued after a BBC Eye investigation that exposed a global online monkey torture ring. The BBC's Pallab Ghosh explores why this world first test is a big deal for space exploration. An EU scheme has helped bring the Curlew back from the brink of extinction. The elephants were evacuated from flash flooding at a sanctuary near Chiang Mai, Thailand. Very little is known about the effect of the cyanobacteria on wildlife. The endangered amphibians were reared at Oregon Zoo and released at a Washington state wildlife refuge. 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.