"We are very different from all previous species, and we have the power to endure. We also have the power to destroy ourselves." — Lord Martin Rees Ryan Lash/TED hide caption

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TED Radio Hour

Lord Martin Rees: How Can We Ensure Our Survival As A Species?

Astronomer and cosmologist Lord Martin Rees asks whether our species will endure despite the many existential threats we face.

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"That I'm standing here telling this story is proof that we all can accomplish great things, through ambition, through passion, through sheer stubbornness." — Ben Saunders James Duncan Davidson/TED hide caption

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Russ Finch holds up half of a Cara Cara orange grown in his geothermal greenhouse in Alliance, Neb. Courtesy of Grant Gerlock/Harvest Public Media hide caption

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Green when young, and about the size of an adult human's hand when full-grown, Dryococelus australis is more commonly known as the Lord Howe Island stick insect, or the tree lobster. Courtesy of Rohan Cleave/Melbourne Zoo hide caption

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A neighborhood where many people have left their homes because of a massive natural-gas leak is seen in the Porter Ranch neighborhood of Los Angeles in December. David McNew/AFP/Getty Images hide caption

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Wisdom, a Laysan albatross that's believed to be 65 years old, and her mate have welcomed a new chick at the Midway Atoll National Wildlife Refuge. Here, a week-old chick peeks out from its nest. Kaipo Kiaha/Paliku Productions hide caption

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A central piece of President Obama's climate change initiatives is now on hold, after the Supreme Court put a stay on rules limiting carbon pollution generated by U.S. power plants. Charlie Riedel/AP hide caption

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The totoaba is prized for its large bladder. Richard Herrmann/Minden Pictu via Corbis hide caption

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Goats and Soda

Chinese Taste For Fish Bladder Threatens Tiny Porpoise In Mexico

The nets that ensnare the giant totoaba fish also trap and kill the world's smallest and rarest mammal: a porpoise called the vaquita.

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Jeneyah McDonald stands amid cases of bottled water in the kitchen of her home in Flint, Mich. Before water donations arrived in Flint, McDonald says, she spent an estimated $100 out of her $300 weekly grocery bill buying safe water for her family. Laura McDermott for NPR hide caption

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In St. Joseph, La., it's not uncommon for brown water like this to come streaming from faucets. Courtesy of Garrett Boyte hide caption

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December brought storm clouds to the Porter Ranch neighborhood in Southern California's San Fernando Valley. David McNew/AFP/Getty Images hide caption

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Sporadic dengue fever outbreaks in Florida in 2009 and 2010 spurred mosquito control efforts in Key West and Miami Beach, shown here. The same mosquito that carries dengue, Aedes aegypti, can transmit Zika. Joe Raedle/Getty Images hide caption

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The city of Flint, Mich., may not have enough money in the future to pay for repairing broken water mains and replacing sewer lines. Brett Carlsen/Getty Images hide caption

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