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

  1. Animals

    When a species can’t stand the heat

    When temperatures rise, New Zealand’s tuatara produce more males. With global warming, that could leave the ancient reptile species with too few females to avoid going extinct.

  2. Animals

    Explainer: How invasive species ratted out the tuatara

    The introduction of rats to New Zealand led to huge population losses of the ancient tuatara. These uncommon reptiles vanished from the mainland. This left isolated populations to survive on several dozen isolated islands.

  3. Animals

    Kangaroos have ‘green’ farts

    The farts and belches of these animals contain less methane than do those from other big grass grazers. Microbes in their digestive tract appear to explain the ‘roos lower production of this greenhouse gas, a new study finds.

  4. Microbes

    Return of the giant zombie virus

    Scientists have discovered a new type of virus in Siberian soils. It's the largest virus ever discovered. And guess what: It could infect cells even after 30,000 years in cold storage.

  5. 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.

  6. Health & Medicine

    Intel STS finalist finds new flu fighters

    Intel Science Talent Search finalist Eric Chen used a computer simulation to narrow down chemical targets to fight influenza. The drugs that he identified could be the next big weapons against flu.

  7. Animals

    Passing diseases from bee to bee

    A study finds that the viruses and parasites that plague honeybees can infect bumblebees too, sickening another important pollinator.

  8. Animals

    ‘Crazy’ ant fight

    By neutralizing the poison produced by fire ants, ‘crazy’ ants can survive heated battles. And that may help explain why crazy ants are edging out fire ants in parts of the southern United States.

  9. Animals

    First living fish leaves ‘endangered’ list

    Twenty-one years ago, a minnow facing a high risk of extinction was placed on the U.S. Endangered Species List. With help from scientists, the fish appears to have largely recovered. It’s the first ‘listed’ fish to do so.

  10. Animals

    Explainer: Animals’ role in human disease

    Wildlife, livestock and pets are the source of most germs that can sicken people

  11. Animals

    Infectious animals

    Critters spread many germs that can sicken each other — and even kill people.

  12. Chemistry

    A plant enemy’s enemy

    Plants use chemicals to recruit help in fighting off pests.