James Hansen
Speaking Up - 15 Dec
Whether it's asking for a raise or asking for equality, speaking up can be risky — even dangerous. This hour, TED speakers share ideas and stories about taking the crucial step to say something.
James Hansen: sea level rise
Veteran climate scientist who works at the Climate Science, Awareness and Solutions Program, at the Earth Institute, Columbia University. Audio
Neil Armstrong's biographer describes his life
The first human to set foot on the Moon has taken the final step in his journey. Neil Armstrong's biographer Dr James Hansen describes the space pioneer's life. Audio
Lignite debate gets global focus
The head of Solid Energy says Southland's lignite reserves should be used to give both the world's poor and New Zealanders a better life. Audio
James Hansen: climate science
Director of NASA's Goddard Institute for Space Studies in New York, Adjunct Professor at Columbia University's Earth Institute, and one of the best-known climate scientists in the world. Audio