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.
Pat Tillman walked away from a multi-million dollar N-F-L contract to fight with U-S special forces. He was killed in Afghanistan two years later. How the Army tried to keep his family and the public from learning the truth about his death.
- Jon Krakauer author of "Into the Wild", "Into Thin Air", and "Under the Banner of Heaven," "Eiger Dreams," and editor of Modern Library Exploration series.
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