Global landmarks including the Eiffel Tower in Paris and Sagrada Família Basilica in Barcelona switched off their lights for an hour at 20:30 local time on Saturday night to mark Earth Hour.

The global event, organised by the World Wide Fund for Nature, takes place every year to raise environmental awareness.

It aims to encourage people to turn off their lights for 60 minutes and the event first started in Sydney, Australia, in 2007.

Video journalist: Emaan Warraich

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.

The six women, including pop star Katy Perry, took off from Texas on Jeff Bezos' Blue Origin rocket.

The eclipse won't be total anywhere in the world, but parts of Canada will come close.