• 12:23pm Jan 07, 2013
    Science Science Books Health & Safety

    'Full Planet, Empty Plates'

    In Full Planet, Empty Plates: The New Geopolitics of Food Scarcity, Lester Brown says the world's food supply is tightening, and the reasons are many. People in developing countries are eating more meat, a grain-intensive food; farmers are overpumping, causing water tables to fall; and crop yields have plateaued, despite technological advances.
  • 10:54am Jan 03, 2013
    National National Science

    'Stand Your Ground' Linked To Increase In Homicides

    A controversial self-defense statute appears to produce more killings, according to a new study. Advocates for the law say it's working as designed. But researchers have different explanations about what might be happening.
  • Posting a picture like this on the fridge might seem like good motivation for weight loss. But scientists say it might instead inspire weight gain.
    11:16am Jan 02, 2013
    Science Science Health & Safety

    Can Skinny Models Undermine Your Dieting Goals?

    Many people turn to superfit models for weight-loss inspiration. There's growing evidence that this is a mistake. New research from the Netherlands explores whether repeated exposure to images of skinny models helps or hinders dieters.
  • 1:03pm Dec 28, 2012
    Science Science Books

    The Renaissance Man Who Got It All Wrong

    In A Man of Misconceptions: The Life of an Eccentric in an Age of Change, John Glassie writes of 17th-century Jesuit priest and scientist Athanasius Kircher, a renaissance man who studied magnetism, Mount Vesuvius, even the blood of plague victims. The only problem? His theories were often wrong.
  • 1:03pm Dec 28, 2012
    Science Science Health & Safety

    'Consider the Fork' Chronicles Evolution of Eating

    Did you know that the human overbite may have evolved after people began using forks and knives? In Consider the Fork, author Bee Wilson traces how kitchen tools--from knives to pots to gas stoves--have changed over time, and how they have influenced what, and how, we eat.
  • 1:03pm Dec 28, 2012
    National National Science Health & Safety

    Making Resolutions That Stick

    Vowing to stop smoking, curb spending or exercise more this January 1? Nearly half of U.S. adults will make year-end resolutions to change for the better in the coming year. Clinical psychologist John Norcross talks about how to increase the odds of success.
  • Brain scans using Amyvid dye to highlight beta-amyloid plaques in the brain. Clockwise from top left: a cognitively normal subject; an amyloid-positive patient with Alzheimer's disease; a patient with mild cognitive impairment who progressed to dementia d
    Slide courtesy of the journal Neurology
    7:24pm Dec 26, 2012
    Science Science Health & Safety

    Despite Uneven Results, Alzheimer's Research Suggests A Path For Treatment

    The year saw some disappointments in the development of drugs to treat Alzheimer's. But the setbacks were offset by progress in other areas. The upshot from this year's mixed results, some scientists say, is that treatment for Alzheimer's needs to start long before forgetfulness and muddled thinking are apparent.
  • 11:36am Dec 26, 2012
    Science Science Health & Safety

    Stem Cells Treat Lou Gehrig's Disease, In Mice

    Reporting in Science Translational Medicine, researchers write that neural stem cell implants were able to slow the onset of amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, in mice. Study author Evan Snyder discusses the stem cells' protective effect, and why human trials may not be far behind.
  • A person's DNA can say a lot about a person, but not why someone has committed a horrific crime like mass murder.
    9:21pm Dec 21, 2012
    National National Science Health & Safety

    Killer's DNA Won't Explain His Crime

    Sandy Hook and other mass killings have left people wondering how someone could engage in such behavior. Scientists say that genes can indeed predispose a person to mental illness or violence. But genetic variants alone can't explain why someone commits mass murder.
  • 1:03pm Dec 14, 2012
    Science Science Education

    Alan Alda's Challenge to Scientists: What is Time?

    Alan Alda founded The Flame Challenge last year to promote better science communication, and he started by asking scientists to come up with a kid-friendly explanation for a flame. Now, Alda is back with round two of the popular contest, and kids want to know: What is time?