1. Earth

    California may yet get the first greenhouse gas limits for cars

    President Obama decides to revisit a controversial decision made less than a year ago by his predecessor.

  2. Tech

    Stimulus bill doesn’t ignore R&D

    Featured blog: Here's where the economic-stimulus bill would attempt to revamp and reinvigorate federally financed research.

  3. Earth

    Steven Chu’s Senate Confirmation Looks Certain

    Senate energy committee appreciates Obama's pick for Secretary of Energy.

  4. Earth

    Warmer oceans would fuel more thunderstorms

    Satellite data reveal more thunderheads forming as tropical sea-surface temperatures rise.

  5. Earth

    Obama administration should lead energy transition

    R.K. Pachauri, an engineer and economist by training, is director-general of The Energy and Resources Institute in New Delhi, India, and a corecipient of the 2007 Nobel Peace Prize for his role as chief of the Intergovernmental Panel on Climate Change. The IPCC periodically issues consensus reports on the science of climate change. Senior editor Janet Raloff spoke with him about changes he hopes to see from the Obama administration.

  6. Climate

    Holdren to Head White House Science

    It appears that another physicist with Nobel ties is set to become the primary Obama adviser on science.

  7. Ecosystems

    Thwarting Tree Poachers

    A new federal rule makes it harder to destroy protected forests.

  8. Chemistry

    ENV Tidbits: Corals, nano concerns, and more

    News nuggets on climate-imperiled corals, nanotech worries, and soft drinks bearing pesticides.

  9. Life

    Protect biodiversity hot spots and the rest will follow

  10. Climate

    Fixing Climate: What Past Climate Changes Reveal About the Current Threat— And How to Counter It by Wallace S. Broecker and Robert Kunzig

  11. Climate

    Climate change stifling lemmings

    Warmer winter temperatures are altering the snowpack, squelching the rodents’ population booms.

  12. Archaeology

    Really Cool History

    Tales of the black band: Clues to a 4,200-year-old mystery lie frozen in icy records stored atop Mt. Kilimanjaro.