Feature

Humans

The Science Vote: Linking energy to greenhouse risks

Science and technology have not played out as major presidential campaign issues this year. And following Sen. John McCain’s unexpected announcement that Alaska Gov. Sarah Palin would be his running mate, even foreign policy and major energy issues have been relegated to the back seat as the media feverishly probe the views, background and administrative […]

Earth

Let’s Get Vertical

City buildings offer opportunities for farms to grow up instead of out.

Astronomy

Dead — but not duds

White dwarfs shed light on physics and the fate of the cosmos.

Astronomy

Last Call

The final mission to service the Hubble Space Telescope could radically transform the observatory, but the crew faces some special challenges.