HS-LS2-3
Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in aerobic and anaerobic conditions.
- Life
Scientists Say: Bacteria
Bacteria get a bad rap for making people sick, but only a tiny portion of these single-celled creatures cause disease.
- Life
In blazing heat, some plants open leaf pores — and risk death
When heat waves and droughts collide, water is precious. Some thirsty plants try to cool off by opening tiny pores — only to lose water even faster.
- Animals
Rewilding returns lost species to strengthen ecosystems
Restoring the missing species can help undo human-caused problems by aiding forests, slowing climate change and reducing wildfires.
- Climate
Secret forest fungi partner with plants — and help the climate
Forest fungi are far more than mere mushrooms. They explore. They move nutrients and messages between plants. They can even help fight climate change.
- Animals
Baleen whales eat — and poop — a lot more than we thought
The amount of food that some whales eat and then poop out suggests these animals have a powerful influence over ocean ecosystems.
- Life
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.
- Health & Medicine
What is the role of in-person classes in COVID-19’s spread?
New data haven’t shown that schools pose a big coronavirus risk to kids and their families, despite fears that they might.
- Climate
‘Tree farts’ make up about a fifth of greenhouse gases from ghost forests
Heat-trapping gases from dead trees play an important role in the environmental impact of “ghost” forests.
- Animals
Most species of beetles pee differently than other insects
Scientists uncover their unique system for balancing ions and water. The findings may hint at why beetles are the most diverse animals on Earth.
- Climate
Changing climate now threatens northern lakes year round
Lakes in northern climes are getting warmer, and that’s not good for people, plants or animals.
- Ecosystems
What you can do to improve soils
Soils are the life-sustaining structures under our feet. Here are some tips for keeping soils healthy. First rule of thumb: Give more than you take.
- Agriculture
Healthy soils are life-giving black gold
Scientists explain why everyone needs to value the soils beneath our feet — and why we should not view them as dirt.
