UK Government says nuclear power is key to its climate plans, but can it deliver?
Jordan Dunbar from The Climate Question podcast was given rare access to Hinkley's Points B and C to learn more about what it will take to build eight new reactors by 2050.
Filmed and edited by Laura Gaynor
Professor Brian Cox has pondered the possibility that humans could be Martians and not the suspected life forms on the planet Mars.
The famous physicist told the BBC's Sunday morning program that there were still many unknowns and suggested life on Earth may have originated elsewhere.
Gnanli Landrou invented a special powder that can turn earth and water into a strong building material. He draws inspiration from the homes he grew up in in West Africa.
It has a much lower carbon footprint than concrete and is set to be used in a new building shortly.
For more information, see the People Fixing the World podcast .
Produced by Richard Kenny and Jo Mathys. Filmed by Angus MacKenzie. Journalist: Myra Anubi
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Researchers at Northwestern University in the United States have developed robots that are less than 1mm thick.
Behind-the-scenes footage shows employees hand-sorting the contents of people's recycling bins to remove items that shouldn't be there.
Staff at the £14million recycling plant in Forest Town, Nottinghamshire, help sort 85,000 tonnes of waste manually, alongside automated methods.
After separation, the usable waste goes to manufacturers to create new products.
Video journalists: Sally Bowman and Chris Waring
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Some of California's iconic butterflies, including the monarch butterfly, are on the verge of extinction. But conservationists' efforts to protect them could now be paying off.
For more information, see the People Fixing the World podcast.
Produced by Ben Wyatt and Richard Kenny.
Rachel Hurst is a student at the University of East Anglia who helps other students deal with their climate scares through climate cafes on campus.
It is part of a new program launched by university and mental health charity, Norfolk and Waveney Mind, bringing its services to young people concerned about climate change.
A recent global survey found that 39% of UK students see climate change as one of the biggest issues of their generation.
Aisha Doherty video.
