10,000+ results
10,000+ results for:
- Animals
Viruses can kill wasp larvae that grow inside infected caterpillars
Proteins found in viruses and some moths can protect caterpillars from parasitoid wasps seeking a living nursery for their eggs.
- Earth
Dinosaur-killing asteroid may have made Earth’s largest ripple marks
A tsunami created by the Chicxulub impact could have formed giant ripples found in rock under Louisiana, a new study finds.
- Animals
Polar bears sometimes bludgeon walruses to death with stones or ice
Inuit reports of polar bears using tools to kill walruses were historically dismissed as stories, but new research suggests the behavior does occur.
- Life
If confirmed, tubes in 890-million-year-old rock may be the oldest animal fossils
Newly described wormlike fossils may be ancient sea sponges. If confirmed, the fossils would reveal a remarkably early start to animal life.
- Life
Near-invincible tardigrades may see only in black and white
A genetic analysis suggests that water bears don’t have light-sensing proteins to detect ultraviolet light or color.
- Astronomy
The tiny dot in this image may be the first look at exomoons in the making
New ALMA observations offer some of the strongest evidence yet that planets around other stars have moons.
- Health & Medicine
Why the CDC says it’s crucial to start wearing masks indoors again
While unvaccinated people are driving the spread of the coronavirus, vaccinated people infected with the delta variant may also easily transmit it.
- Animals
How some lizards breathe underwater
Researchers have figured out how some anole lizards can stay underwater for as long as 18 minutes.
- Health & Medicine
Why it’s still so hard to find treatments for early COVID-19
Small studies, unexpected side effects and incomplete information about how drugs work can stymie clinical trials for drugs that can treat COVID-19.
- Climate
A stunning visualization of Alaska’s Yukon Delta shows a land in transition
Water and ice helped form the Yukon River’s delta. Now, climate change is reshaping it.
- Life
‘Wild Souls’ explores what we owe animals in a human-dominated world
The new book Wild Souls explores the ethical dilemmas of saving Earth’s endangered animals.
- Paleontology
3.42-billion-year-old fossil threads may be the oldest known archaea microbes
The structure and chemistry of these ancient cell-like fossils may hint where Earth’s early inhabitants evolved and how they got their energy.
