Tyson

Environment

Farming the Flu

In the midst of the H1N1 crisis, host Jeff Young talks with Johns Hopkins Public Health Professor Ellen Silbergeld who says crowded, filthy conditions at factory farms could speed the mutation and transfer of viruses from pigs to people.

Environment

Water and Women in Kenya

In the developing world, women walk miles each day to find water. Deborah Katina founded the group "Yang'at" which has partnered with the World Church Service to introduce a method of catching water in the rainy season and conserving it for drier times.

The Pluto Files

The astrophysicist who initiated Pluto's dramatic devolution ?from planet to puny plutoid ?tells all in his new book.

Environment

Poznan Preview

International leaders will meet in Poznan, Poland next week to lay the groundwork for a renewed commitment to cutting CO2 emissions, adapting to climate change and fostering renewable energy. Jennifer Morgan, director of the Global Climate Program for the think tank E3G, tells host Bruce Gellerman that she's cautiously optimistic that the U.S., with Barack Obama at the helm, will play a strong role in the fight against climate change.

Environment

Walmart's Wishes

The world's largest retailer says it won't do business with suppliers who violate environmental laws. But can Wal-Mart's low-cost mission align with its lofty goals for sustainability? Host Bruce Gellerman talks with green business consultant Andrew Winston about how Wal-Mart can clean up its act while cleaning up the environment.

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Environment

REDD Corruption

The plan to pay developing nations to save their forests and the carbon in them is potentially worth billions of dollars under the UN scheme called REDD, Reducing Emissions from Deforestation and Degradation. Nearly $4 billion dollars is already on the table, and this cash has attracted both conservationists and criminals.

Environment

On the hunt for dark matter

Dark matter, one of cosmology's most curious mysteries, has yet to be seen. But theorists have good reason to believe that it exists, and that galaxies, stars, and planets could never have formed without the gravitational attraction that dark matter exerts.

Cosmic Quandaries

Astrophysicist Neil deGrasse Tyson talks about the mystery of "dark matter" and a new planet, discovered in a distant galaxy, that looks remarkably like planet Earth.

The Pluto Files

The astrophysicist who initiated Pluto's dramatic devolution ?from planet to puny plutoid ?tells all in his new book.

Lunar Love

Astrophysicist Neil deGrasse Tyson talks about why it's time for Americans to return to the moon.