Thorium and the Future of Nuclear Energy

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Energy too cheap to meter - that was the promise of nuclear power in the 1950s, at least according to Lewis Strauss chairman of the Atomic Energy Commission. That promise has not come to pass - but with some incredible new technologies, perhaps it still could. The question is - should it? Hosted by Matt O Dowd Written by Matt O Dowd Graphics by Leonardo Scholzer Directed by Andrew Kornhaber Produced By: Kornhaber Brown If we want to convert mass into energy, fission gives the most bang for our buck. Unfortunately that “bang” can be literal. Use of nuclear energy may risk the proliferation of nuclear weaponry, and there’s also the problem of nuclear waste, and the specter of horrible accidents. This last one was painted in terrifying detail in the recent dramatization of the Chernobyl disaster. Nuclear reactors sound scary because the disasters are pretty epic. However the reality is that far, far more people die from straight up air pollution due to coal-fired power plants than ever died in a nuclear reactor accident. In fact the radioactivity around coal-fired plants is also higher due to the trace but completely uncontained radioactive products of coal burning. But the most compelling attraction is that nuclear power doesn’t directly produce carbon emissions. In fact nuclear power may be our most sure path to reducing carbon emissions and halting climate change. But can we do nuclear power safely enough? There are modern ideas – including the much-hyped thorium reactor – that suggest maybe we can. Before we can understand those we’ll need to review how nuclear reactors work. Big Bang Supporters: Anton Lifshits David Nicklas Fabrice Eap Juan Benet Justin Lloyd Morgan Hough Quasar Supporters: Mark Heising Mark Rosenthal Tambe Barsbay Vinnie Falco Hypernova Supporters: Chuck Zegar Danton Spivey Donal Botkin Edmund Fokschaner Hank S John Hofmann John R. Slavik Jordan Young Joseph Salomone kkm Mark Heising Matthew Matthew O Connor Syed Ansar Gamma Ray Burst Supporters: Adrien Hatch Alexey Eromenko Andreas Nautsch Bradley Jenkins Brandon Labonte Carlo Mogavero Daniel Lyons David Behtala DFaulk Dustan Jones Geoffrey Short James Flowers James Quintero John Funai John Pollock Jonah Jonathan Nesfeder Joseph Dillman Joseph Emison Josh Thomas Kevin Warne Kyle Hofer Malte Ubl Mark Vasile Nathan Hitchings Nick Virtue Paul Rose Ryan Jones Scott Gossett Sigurd Ruud Frivik Tim Jones Tim Stephani Tommy Mogensen Yurii Konovaliuk سلطان الخليفي