More than 90 percent of Australia's Great Barrier Reef is suffering from coral bleaching, according to a survey published
by an Australian task force last month. While some coral can recover from bleaching, which results from warming
water, scientists estimate that at least half of the bleached coral will not. Meanwhile, researchers have announced
the discovery of a huge new coral reef system at the mouth of the Amazon River. We discuss the importance of
coral reefs to global ecosystems and ongoing efforts to protect them.
Writer Nathanael Johnson realized, after repeated questions from his daughter during their walks, that he knew very little about the flora and fauna in his neighborhood. He set out to discover the stories behind these everyday plants and animals in his book, "Unseen City: The Majesty of Pigeons, the Discreet Charm of Snails & Other Wonders of the Urban Wilderness." We'll talk to Johnson and an expert on urban wildlife about the species that thrive in Bay Area cities. And we'd like to hear from you: what animals and plants captivate you on your urban walks?
Microsoft has filed suit against the Department of Justice over requests for customer information, saying people have a right to know when the government gets a warrant to read their emails. Microsoft says it has received more than 5600 federal demands for data in the past 18 months, and in nearly half, the government forbade Microsoft from informing the customer. The suit comes as Congress wades into the issue with a bill that would require tech companies to provide access to data when served by a court order.