Podcasts Science Material World Quentin reports from the British Science Festival in Bradford on new discoveries in science.

Quentin reports from the British Science Festival in Bradford on new discoveries in science.

Published: Sept. 15, 2011, 4:20 p.m.

Quentin reports from the British Science Festival in Bradford on thorium reactors, plants to clean up explosives, lie detection, ethical tissue and artificial volcanoes to counter global warming.