HS-ESS3-4
Evaluate or refine a technological solution that reduces impacts of human activities on natural systems.
- Agriculture
Teen converts water pollutant into a plant fertilizer
Too much phosphate can fuel algal growth, which can rob oxygen from the water. This can suffocate fish and other wildlife. Stefan Wan found a way to collect that pollutant, which can later be used as a farm nutrient.
- Microbes
Giant cave crystals may be home to 50,000-year-old microbes
Microbes trapped in crystals in Mexico's Naica mine may represent some of the most distinct life forms ever found. The microbes have remained dormant for up to 50,000 years.
- Ecosystems
Underwater meadows appear to fight ocean germs
The seagrasses that sway in coastal currents are more than aquatic groundcover. They can reduce harmful bacteria that might otherwise sicken neighboring animals, new data show.
- Animals
Food-like smell on plastic may lure seabirds to eat it
When plastic smells like supper, seabirds and other animals can be fooled into thinking it is food.
- Earth
Beaches can be a germy playground
Infectious microbes can flourish on sandy beaches. Scientists are now exploring how to find and monitor these hotspots for pollution that can make vacationers sick.
- Animals
Creative ways to help coral reefs recover
Coral reefs are under siege from threats ranging from climate change to explosives. But scientists are developing ways to rebuild reefs before they disappear.
- Chemistry
Laundering clothes may send indoor pollutants outdoors
Clothing absorbs pollutants from indoor air. During washing and drying, the fabric releases those chemicals into the outdoor environment, a new study finds.
- Health & Medicine
U.S. to outlaw antibacterial soaps
Soaps with germ-killing compounds promise cleaner hands. But manufacturers couldn’t show they offer any safety advantage. Now the U.S. government is banning them.
- Earth
Scientists Say: Plastisphere
As plastic floats in the ocean, it can acquire its own colony of microbes and algae. We call this ecosystem the plastisphere.
- Climate
Volcanic rocks can quickly turn pollution into stone
A test program in Iceland injected carbon dioxide into lava rocks. More than 95 percent of the gas turned to stone within two years.
- Animals
Teens use science to worm through plastic waste
Some beetle larvae can eat plastic, which might be good for our pollution problem. But which types eat the most can vary a lot, these young scientists find.
- Animals
Catching ‘Dory’ fish can poison entire coral reef ecosystems
More than half of saltwater-aquarium fish sold in the United States may have been caught in the wild using cyanide, new data show.
