The Documentary Podcast Folgen

Sockeye and Chinook salmon make one of the world's great animal migrations, swimming 900 miles from the Pacific Ocean up 6,500 feet into Idaho’s Sawtooth Mountains, where they spawn and die - but that journey may not happen much longer. In addition to the gauntlet of predators the fish face, from orcas to eagles, they are also running into a man-made obstacle: huge concrete dams. Most scientists agree the dams need to go for the fish to live, but the dams provide jobs, clean energy, and an inexpensive way for farmers to get their crops to international markets. However, US Congressman Mike Simpson, a Republican representing Idaho, has a plan to save the salmon. He wants to blow up four dams on the Snake River and reinvent the region's energy infrastructure - a plan which has been overwhelmingly rejected by his own party. Heath Druzin investigates how a bitter fight is now playing out in America's Pacific Northwest, pitting Native American tribes and conservationists against grain growers and power producers. Presented by Heath Druzin Produced by Richard Fenton-Smith(Image: Sockeye salmon. Credit: Mike Korostelev)

New apps that provide access to stock markets are revolutionising the world of trading, but they are also creating problems. A new generation of traders are emerging, fuelled by social media and with dreams of earning a fortune. Seoul journalist Grace Moon visits the Korea Centre For Gambling Problems to explore if easily accessible trading apps are fuelling addictions, before hearing worldwide stories of stock market highs and lows.

In 2009, someone broke into the Climatic Research Unit of the University of East Anglia in the UK and stole emails. The material was distributed online - mainly on blogs linked to climate change sceptics. It was used to make the case that scientists were surreptitiously twisting the facts to exaggerate climate change. That was not the case. But before that became clear, events would take on a life of their own, sparking a global media storm. BBC Security correspondent Gordon Corera goes on the trail of this ‘cyber cold case’ to try and discover who was behind ‘Climategate’.