Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.

  1. Life

    Fighting ‘like an animal’ may not be what you expect

    Evolution has produced a broad range of conflict styles. And some of the best examples come from outside the world of the familiar.

  2. Animals

    Analyze This: Electric eels’ zaps are more powerful than a TASER

    Shocking! A biologist reached his hand into a fish tank and let an electric eel zap him. It let him measure precisely how strong a current it could unleash to defend itself.

  3. Health & Medicine

    Analyze This: Flu vaccine’s protection varies

    Getting a flu shot every year is an important way to protect yourself and those around you — even if the vaccine isn’t 100 percent effective.

  4. Health & Medicine

    Explainer: What is a vaccine?

    Vaccines give the body’s natural defense system a boost against infectious disease.

  5. Animals

    Beware the tap of the narwhal’s tusk

    A new video shows narwhals using their tusks to tap fish before eating them. They might be stunning their prey — or just playing with their food.

  6. Microbes

    World’s deepest zoo harbors clues to extraterrestrial life

    Scientists have found a wide range of life deep below Earth’s surface. The discoveries could help inform our search for life on other planets.

  7. Chemistry

    New rules point scientists toward next-gen germ-killers

    Shape and other features help germ-killing drugs make it through barriers to enter bacteria. Knowing how they do this could lead to more and better better antibiotics.

  8. Science & Society

    Cool Jobs: New tools to solve crimes

    Future investigators may identify criminals by the microbes they leave behind or by using DNA-like evidence from strands of their hair.

  9. Tech

    Underwater robot vacuums up lionfish

    Lionfish damage coral reefs in the Atlantic Ocean. A new underwater robot hunts, stuns and captures the bullies with help from a human operator.

  10. Environment

    Tiny air pollutants inflame airways and harm heart

    New studies show how tiny bits of air pollution, called particulate matter, can lead to health problems ranging from chronic runny noses to heart disease.