HS-LS2-7
Design, evaluate, and refine a solution for reducing the impacts of human activities on the environment and biodiversity.
- 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.
- Ecosystems
Can people protect as much space as nature needs?
To save biodiversity, nations are drafting a plan to protect 30 percent of Earth by 2030. Up for debate is how best to do that.
- Chemistry
Here’s how to make flip-flops biodegradable
Innovative flip-flops made from an algae-based plastic decompose in soil or compost. The comfy shoes also avoid use of fossil fuels.
- Animals
Around the world, birds are in crisis
Human activities around the world are threatening bird species. Numbers of even some of the most common species are starting to fall.
- Animals
Polluting microplastics harm both animals and ecosystems
Researchers are beginning to uncover the real-world impacts of polluting microplastic bits on animals and the ecosystems they inhabit.
- Agriculture
Learning what stresses queen bees could save their hives
Beehives often die off after the queen gets too stressed to make enough babies. New tests could identify what stressed her — and point to solutions.
- Climate
Changing climates can take cooling tips from warm regions
When summer heat waves hit northern cities, people might look to keep cool using tropical building strategies — and forgotten architectural wisdom.
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A dirty and growing problem: Too few toilets
As the famous book says, everybody poops. That’s 7.8 billion people, worldwide. For the 2.4 billion with no toilet, the process can be complicated.
- Animals
Whale blowholes don’t keep out seawater
Whales’ blowholes aren’t as protective as scientists had thought. They not only can let in water but also pollutants.
- Ecosystems
Soggy coastal soils? Here’s why ecologists love them
Coastal wetlands can protect our shores from erosion, flooding and rising sea levels.
- Agriculture
Pesticides contaminate most food of western U.S. monarchs
Monarch caterpillars eat only milkweeds. A new study finds widespread pesticide use has tainted these plants across the insect’s western U.S. breeding grounds.
- Health & Medicine
Deadly heat: Expected by century’s end, it’s here already
Instances of hot and humid conditions that threaten human lives are on the rise.
