policy

Ever since prehistoric man first set fires to drive game towards hunters and cliffs, humans have altered their environment for their own gain. No more so than in the years since the Industrial Revolution, when carbon emissions began to drastically alter Earth's climate and atmosphere. And now that we know definitively that humans can alter Earth's climate, some scientists have begun investigating ways to deliberately change the weather to offset the negative impact of a century of inadvertent human generated climate change.

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How long does it take the Earth to revolve around the sun? Did the earliest humans and dinosaurs live at the same time? What percentage of the Earth’s surface is covered with water? Think you know the answers? Well, if you’re an American adult you may be frighteningly alone.

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Call it the "green" team or even the "dream" team, but what environmentalists can now say with affirmation is that change really is here. President-elect Barack Obama's picks for his administration's green team are among the best and brightest scientists and advocates of environmental change.

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The idea that a presidential debate focused on science will advance the cause of science "is more magical thinking than scientific," according to a new essay by David Goldston in the journal Nature. Momentum around such a debate has been growing since December, when a grassroots, nonpartisan group called Science Debate 2008 started a petition that called for a "public debate in which the U.S. presidential candidates share their views on the issues of The Environment, Medicine and Health, and Science and Technology Policy." The petition now has many thousand signatories [full disclosure: they include both myself and the editor-in-chief of Popular Science, a.k.a. my boss].

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In July, the space shuttle Discovery is slated to deliver two tons of hardware and supplies to the partially built International Space Station. This mission is paid for. As for the 16 more needed to finish assembly, as mandated by President George W. Bush two years ago in his Vision for Space Exploration policy, NASA is short by as much as $5 billion.

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