Earth
- Earth
‘Mass Extinction’ vivifies the science of die-offs
The dinosaurs were killed off some 65 million years ago after a colossal asteroid struck Earth. But what many people probably don’t know is how paleontologists came to that conclusion. "Mass Extinction: Life at the Brink" tells that story.
- Animals
Scientists’ tags on fish may be leading seals to lunch
In an experiment, 10 young grey seals learned to associate the sound of a pinging tag with fish. The tags may make fish vulnerable to predators, scientists say.
- Life
Tasty animals end up on latest list of threatened species
Growing food market lands several species, including Pacific bluefin tuna and Chinese pufferfish, on the IUCN Red List of Threatened Species.
- Environment
DDT lingers in Michigan town
Decades after a plant manufacturing DDT shut down in Michigan, the harmful insecticide is still found in neighboring birds and eggs.
- Environment
Colorado deluge produced flood of drug-resistance genes
Flooding in Colorado’s South Platte River Basin washed antibiotics and drug-resistance genes into pristine waterways.
- Environment
Spiders enlisted as pollution sensors for rivers
Hunting arachnids provide a better picture of chemical threats to food web.
- Climate
Lightning strikes will surge with climate change
Climate warming could boost lightning strikes in the United States by roughly 50 percent over the next century.
- Environment
Thirdhand smoke poses lingering danger
Harmful cigarette chemicals that linger on surfaces, known as thirdhand smoke, can go on to pollute the air and may harm people’s health.
- Earth
More multi-tornado days in the forecast for U.S.
The number of days per year with tornadoes has gone down over the last few decades in the U.S., but the number of days that see 30 or more twisters is going up.
- Climate
Melting ice forces walrus detour
Warming temperatures and shrinking summer ice cover have forced the animals to seek solid ground during feeding season.
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- Earth
Early animals couldn’t catch a breath
Low levels of oxygen may have hindered evolution of animal life hundreds of millions of years ago.
