News

  1. Health & Medicine

    Early intellectual gap found for kids of older fathers

    A reanalysis of data from more than 33,000 U.S. children finds that those with older fathers fared somewhat poorer on intelligence tests than those with younger fathers, regardless of mothers’ ages.

    By Bruce Bower
  2. Health & Medicine

    President reverses federal ban on stem cell funding

    President Barack Obama signed an executive order lifting a ban on federal funding for research that uses embryonic stem cells.

    By Janet Raloff
  3. Space

    Frozen cosmic fingerprints

    Researchers claim to find evidence of 11th century supernovas and the solar cycle in an ice core.

    By Ron Cowen
  4. Climate

    Chinese carbon dioxide emissions eclipse efficiency gains

    A boost in manufacturing and construction in China led to an increase in carbon dioxide emissions that outstripped any gains from increased energy efficiency.