1. Chemistry

    CO2 sponge

    Macromolecule that was accidentally discovered seems to trap carbon dioxide from the air.

  2. Earth

    A hundred new nukes?

    Here are some issues to contemplate while deciding whether to welcome the nuclear-power renaissance that Sen. Alexander has just proposed.

  3. Earth

    Signs of ancient sea ice

    New analyses of Arctic seafloor sediments suggest floating ice debuted in the ocean at least 47.5 million years ago.

  4. Earth

    Ozone hole trims polar water’s CO2-absorbing power

    Simulations also suggest that the dearth of ozone over Antarctica leads to ocean acidification. Simulations also suggest that the dearth of ozone over Antarctica leads to ocean acidification

  5. Climate


    Understanding long-term changes in wildfire patterns challenges scientists from multiple disciplines.

  6. Climate

    Carbon dioxide not to blame in ice age mystery

    Scientists look at seafloor sediments to determine that a long-term decline in carbon dioxide is not the reason for less frequent ice ages.

  7. Earth

    White House releases report on climate change

    A new White House report addresses current and projected impacts of climate change across the United States.

  8. Climate

    Cultivation changed monsoon in Asia

    The loss of forests in India, China during the 1700s led to a decline in monsoon precipitation.

  9. Earth

    Federal budget’s new ‘black book’

    The administration details a proposed $17 billion in budget savings in a new book.

  10. Health & Medicine

    Science budgets look rosy, AAAS finds

    The president and Congress have collaborated in targeting substantial increases for federal investments in R&D this year.

  11. Climate

    On federal science — and science spending

    Things you might have gleaned at the AAAS Forum on Science and Technology Policy.

  12. Earth

    A limit for carbon emissions: 1 trillion metric tons

    To reduce risks of severe damage from climate change, humans should burn no more than 1 trillion tons of carbon in total, researchers suggest.