HS-LS2-8
Evaluate the evidence for the role of group behavior on individual and species' chances to survive and reproduce.
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Plants
Scientists Say: Phloem
Phloem is tissue that delivers food, made in leaves during photosynthesis, to the rest of a plant.
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Animals
Bloodthirsty vampire bats prefer drinking with friends
Vampire bats were known to bond with others in their roost. Now, research suggests bonded bats often drink blood from animals together.
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Animals
Cockatoos learn from each other how to open garbage bins
The bin-opening behavior is an example of social learning. It’s also the basis of a foraging culture. Learn more in this web comic.
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Animals
Scientists Say: Marsupial
These mammals are known for riding around in a pouch on their mother’s belly, where they continue developing after they’re born.
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Genetics
Explainer: What is RNA?
A partner to DNA, cells use this molecule to translate the instructions for making all of the many proteins that your body needs to function.
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Plants
Well-known wildflower turns out to be a secret meat-eater
Look closely at Triantha occidentalis, and you’ll see gluey hairs — and a trail of insect corpses on its stem.
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Animals
Analyze This: Some female hummingbirds go undercover
Some female white-necked jacobin hummingbirds boast bright blue colors similar to males. That may help females blend in to avoid attacks.
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Animals
There’s a new word for birds stealing animal hair: kleptotrichy
Dozens of YouTube videos show birds grabbing hair from dogs, cats, people, raccoons and even a porcupine — a behavior rarely described by scientists.
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Animals
Let’s learn about elephants
Check out five wild facts you may not know about a familiar animal: the elephant.
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Environment
Cheatgrass thrives on the well-lit urban night scene
Middle-grade campers team up with ecologists at Denver University to show that streetlights boost the growth of a reviled invasive species.
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Animals
Squirrels use parkour tricks to leap from branch to branch
Squirrels navigate through trees by making rapid calculations. They have to balance trade-offs between branch flexibility and the distance between tree limbs.