1. Ecosystems

    The Buzz over Coffee

    Most people consider the continued spread of Africanized honeybees in the Americas as horrifying news. Nicknamed killer bees, these notorious social insects rile into stinging mobs with little provocation. But new research finds evidence that these irritable insects have been performing a hitherto unrecognized service for people around the world. They’ve helped keep down the […]

  2. Ecosystems

    Plight of the Iguanas: Hidden die-off followed Galápagos spill

    Residues of oil spilled in the Galapágos Islands in January 2001 may have caused a 60 percent decline in one island's colony of marine iguanas.

  3. Ecosystems

    Famine reveals incredible shrinking iguanas

    Marine iguanas in the Galápagos Islands are the first vertebrates known to reduce their size during a food shortage and then regrow to their original body lengths.

  4. Ecosystems

    Deprived of Darkness

    From anecdotal reports of little-studied phenomena, researchers suspect that artificial night lighting disrupts the physiology and behavior of nocturnal animals.

  5. Ecosystems

    Climate Upsets: Big model predicts many new neighbors

    The biggest effects of climate change during the next 50 years may not be extinctions but major reshuffling of the species in local communities.

  6. Ecosystems

    Are They Really Extinct?

    A few optimists keep looking for species that might already have gone extinct.

  7. Ecosystems

    Cryptic Invasion: Native reeds harbor aggressive alien

    A mild-mannered reed native to the United States is getting blamed for the mayhem caused by an evil twin.

  8. Ecosystems

    Biodiversity Hot Spots: Top 10 sea locales make sobering list

    Biologists have identified the world's most vulnerable coral reefs, each with organisms found nowhere else and threatened by human influence.

  9. Ecosystems

    Genetic lynx: North American lynx make one huge family

    A new study of lynx in North America suggests the animals interbreed widely, sometimes with populations thousands of kilometers away.

  10. Ecosystems

    Tadpole Science Gets Its Legs . . .

    The amazingly complex tadpole now shines in ecological studies.

  11. Ecosystems

    Mistletoe, of all things, helps juniper trees

    A mistletoe that grows on junipers may do the trees a favor by attracting birds that spread the junipers' seeds.

  12. Ecosystems

    Move over, Leo. Give me more elbow room

    The average size of the largest land animals on each of 25 oceanic islands and five continents strongly depends on the land area there.