1. Ecosystems

    Males live longer with all-year mating

    Male butterflies live longer in Madeira, where females are available year-round, than in Sweden, where females mature in one burst.

  2. Ecosystems

    Pfiesteria’s Bite: Microbe may kill fish by skinning, not poisoning

    At least one kind of Pfiesteria—accused of killing fish and threatening human health—does not produce a toxin but kills by eating holes in fish's skin, some researchers say.

  3. Ecosystems

    Making Scents of Flowers

    Science gets the tools to start sniffing around the ecology of floral scent.

  4. Ecosystems

    The Buzz over Coffee

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  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. Ecosystems

    Are They Really Extinct?

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

  10. 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.

  11. 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.

  12. 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.