What’s at stake if we mine the deep sea?

As the International Seabed Authority gathers in Jamaica to thrash out regulations for mining the deep sea, Chris Michael of the Guardian’s Seascape team gives Ian Sample the background to this highly contested decision. Ian also hears from the marine biologist Dr Diva Amon about why some scientists are sounding the alarm. Help support our independent journalism at theguardian.com/sciencepod