Stories by Harvey Leifert

Cosmos Incognita: Voyager 1 Spacecraft Arrives at the Cusp of Interstellar Space

Thirty-three years into its voyage, the solar wind speed around Voyager 1 has dropped to zero as the space-hardened craft nears a milestone in its journey out of the solar system

December 16, 2010 — Harvey Leifert

Sustainability

Coal Poses Climate Catastrophe as "Peak Oil" Approaches

When will oil production peak and begin to decline? And what will come after?

December 18, 2008 — Harvey Leifert

The Sciences

Science Must Evolve to Tackle Global Warming

As the need to prepare for the consequences of climate change presses, scientists must change their focus

December 16, 2008 — Harvey Leifert