简介：https://www.bbc.co.uk/iplayer/episode/b0bcmjht/horizon-2018-4-spina-bifida-me One in every 1,000 pregnancies in Britain has a spine or brain defect l
简介：In 2014, the International Space Station had to move three times to avoid lethal chunks of space debris and there is an increasing problem of satellit
简介：In a small village on top of the mountains, Maia Zenasi, a rowdy and solitary 16-year-old tomboy, is the only girl on the local hockey team and her li
