HS-LS2-2
Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales.
- 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.
- Microbes
Arctic thaw is spreading wildlife diseases
Polar animals are encountering new, killer parasites as melting ice unlocks their access to new hosts.
- Animals
A weekend for the birds
February 14 to 17 is this year’s Great Backyard Bird Count. It offers an opportunity to not only learn about the birds in your neighborhood but also contribute to science.
- Life
Caught in the act
Scientists observe some evolutionary speed demons as they adapt over the course of just a few years to new environmental conditions.
- Animals
Explainer: Animals’ role in human disease
Wildlife, livestock and pets are the source of most germs that can sicken people
- Health & Medicine
Explainer: What should I know about HIV and AIDS?
Here are some common myths and some less common facts.
- Animals
Explainer: People can sicken animals
Wildlife can sometimes become infected with germs shed by people.
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- Animals
An enemy in the cave
Bats under attack from a fungus send scientists searching for clues to solve a deadly mystery.
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- Climate
Arctic algae show climate change
Sediment from Arctic lakes shows that much of the Northern Hemisphere has been warming for many decades.
