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These 'Trees' Scrub Greenhouse Gases From the Air

Klaus Lackner The Conversation
The U.S. Department of Energy has an ambitious goal to scale up direct air capture, a technology that uses chemical reactions to capture CO2 from air. We asked a pioneer about the state of the technology and where it’s headed.

How Much Longer Will Major League Baseball Stay in the Closet?

Peter Dreier The Conversation
Athletes in three of the five major male team sports – the NBA, NFL and MLS – have come out while still playing, but not one of more than 20,000 men who have played major league baseball. What’s taken so long?
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