Ecosystems
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- Ecosystems
Exxon Valdez: Tidal waters still troubled
From birds and clams to herring, many species continue to show persistent impacts of an oil spill that occurred two decades ago.
- Ecosystems
Exxon Valdez killed future for some killer whales
An Alaskan oil spill disrupted family structure in killer-whale groups, with lasting and dramatic repercussions.
- Humans
Otters and oil: Problems remain
The behavior of Alaska's southern sea otters may unwittingly expose them to toxic oil-spill residues.
- Ecosystems
U.S. bird populations in decline, report says
Secretary of the Interior Ken Salazar releases a review of U.S. bird populations.
- Ecosystems
Too much intermingling puts native trout in trouble
Even a small amount of hybridizing may cause problems for the native westslope cutthroat trout.
- Agriculture
Gut bacteria ally with Bt
A new study finds that a particular microbe makes caterpillars susceptible to the insecticide.
- Ecosystems
Fish shrinkage reversible, but better hurry
In an experiment, scientists show that, although it takes generations, fish can rebound from evolutionary pressures created by selective harvesting, which has pushed some populations to become small and slow-growing.
- Ecosystems
Marine census: Surprising number of creatures bipolar
Census of Marine Life offers a preview of massive international census gives fuller count, shows some sea species at both poles.
- Humans
AAAS: March of the Hungry Penguins
Patagonian penguins have become sentinels of climate change and human impacts on the marine world.
- Agriculture
AAAS: Stress Can Make Plants More Nutritious
People who aren't veggie lovers might want to seek out types of produce that deliver an especially big nutrient bang for the gram.
- Ecosystems
Flowering plants welcome other life
When angiosperms diversified 100 million years ago, they opened new niches for ants, plants and frogs.
