Ecosystems
- Paleontology
Hyenas roamed the Arctic during the last ice age
Two teeth confirm the idea that hyenas crossed the Bering land bridge into North America, a study finds.
- Ecosystems
Many of the world’s rivers are flush with dangerous levels of antibiotics
Antibiotic pollution can fuel drug resistance in microbes. A global survey of rivers finds unsafe levels of antibiotics in 16 percent of sites.
- Environment
Some Canadian lakes still store DDT in their mud
Yesterday’s DDT pollution crisis is still today’s problem in some of Canada’s lakes.
- Life
Some fungi trade phosphorus with plants like savvy stockbrokers
New views show how fungi shift their stores of phosphorus toward more favorable markets where the nutrient is scarce.
- Chemistry
Carbon plays a starring role in the new book ‘Symphony in C’
In Symphony in C, geophysicist Robert Hazen explores carbon’s ancient origins, its role in life and its importance in the modern world.
- Animals
Worms lure two new species of hopping rats out of obscurity
In the Philippines, scientists have identified two new species of shrew-rat, an animal whose limited habitat plays host to remarkable biodiversity.
- Environment
Chemicals in biodegradable food containers can leach into compost
PFAS compounds from compostable food containers could end being absorbed by plants and later eaten by people, though the health effects are unclear.
- Environment
How one fern hoards toxic arsenic in its fronds and doesn’t die
To survive high levels of arsenic, a fern sequesters the heavy metal in its shoots with the help of three proteins.
- Animals
Shy fish no bigger than a pinkie provide much of the food in coral reefs
More than half of the fish flesh that predators in coral reefs eat comes from tiny, hard-to-spot species.
- Plants
Some plants use hairy roots and acid to access nutrients in rock
Shrubs in mountainous areas of Brazil have specialized roots that secrete chemicals to extract phosphorus from rock.
- Animals
Tiger sharks feast on migratory birds that fall out of the sky
Terrestrial birds that fall from the sky during their migration across the Gulf of Mexico can end up in the bellies of tiger sharks.
- Ecosystems
Readers were curious about green icebergs, aliens and more
Readers had questions and comments about icebergs and climate change, CBD and NASA’s search for E.T.
