Coral reefs are crucial to the ocean's ecosystem, providing sustenance to a quarter of marine life. Today, more than one third of the world's reefs are deteriorating. What's causing coral reef destruction and possible new remedies to address it.
Artificial trees to capture carbon, billions of tiny mirrors to reflect sunlight, sulfate to whiten clouds: promise and pitfalls of large scale radical ideas for addressing climate change.
- Eli Kintisch author of "Hack the Planet: Science's Best Hope- or Worst Nightmare - for Averting Climate Catastrophe"
- Margaret Leinen Founder and CEO, The Climate Response Fund
- Robert Jackson Nicholas Chair of Global Environmental Change and a professor in the Biology Department, Duke University
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