Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism.

  1. Health & Medicine

    The cool science of hot peppers

    Why are chili peppers spicy? Why does anyone crave food that burns? Uncovering this fiery veggie’s secrets could help fight pain and obesity.

  2. Health & Medicine

    Eating breakfast — even twice — is truly the healthier choice

    Some experts argue that breakfast is the most important meal of the day — especially for keeping school-age kids at a healthy weight.

  3. Life

    Fattier yeast live long and prosper

    Scientists were hoping to build better biofuels. Instead they discovered that fatter yeast cells live longer than lean ones.

  4. Microbes

    Microbes mine treasure from waste

    Like miniature factories, bioreactors house microbes recruited to chew through wastes to clean dirty water, make chemicals or generate electricity.

  5. Plants

    Explainer: Some supplements may not have what it takes

    Dietary supplements made from plants may not contain all of the chemicals that usually make a particular plant healthy for humans.

  6. Health & Medicine

    Food supplements can make you sick

    Drugs must past safety testing before they can be sold. But food supplements don’t have to meet the same standards.

  7. Health & Medicine

    Sugar makes mice sleepy

    Sugar may amp up sleep-promoting cells in the brain, a new study in mice finds.

  8. Health & Medicine

    For better weight control, fiber up!

    Certain types of fiber suppress appetite, at least in mice. Found in fruits, vegetables, oats and barley, this fiber breaks down in the gut to release acetate. That travels to the brain, where the chemical prompts the release of hunger-fighting hormones.

  9. Chemistry

    Urine may make Mars travel possible

    On Earth, urine is a waste. En route to Mars, it could be a precious renewable commodity: the source of drinking water and energy.

  10. Health & Medicine

    Some of chocolate’s health benefits may trace to ‘bugs’

    Dark chocolate offers people a number of health benefits. A new study finds that the breakdown of chocolate by microbes in the human gut be behind some benefits.

  11. Health & Medicine

    Low protein, longer life — for some

    Eating less protein can lengthen life and improve health. That’s the message from new studies in mice and in people.

  12. Earth

    Intel STS finalist brings earthworms to the big time

    Earthworms and charcoal help plants resist infections, according to research by Anne Merrill, a finalist in the 2014 Intel Science Talent Search.