Uncategorized
- Animals
This butterfly is the first U.S. insect known to go extinct because of people
A 93-year-old Xerces blue specimen’s DNA shows that the butterfly is a distinct species, making it the first U.S. insect humans drove to extinction.
- Microbes
Missing Antarctic microbes raise thorny questions about the search for aliens
Scientists couldn’t find microbial life in soils from Antarctica, hinting at a limit for habitability on Earth and other worlds.
- Life
Pikas survive winter using a slower metabolism and, at times, yak poop
Pikas endure bone-chilling temperatures on the Qinghai-Tibetan Plateau by reducing their metabolism, and when possible, eating yak poop.
- Astronomy
The latest picture of a black hole captures Centaurus A’s massive jets
Data from the Event Horizon Telescope reveal new details of jets spewing from the supermassive black hole at the center of the galaxy Centaurus A.
- Animals
Climate change may be leading to overcounts of endangered bonobos
A changing climate in Congo is affecting how scientists count bonobos’ nests, possibly skewing estimates of the great ape population, a study suggests.
- Humans
Only a tiny fraction of our DNA is uniquely human
Some of the exclusively human tweaks to DNA may have played a role in brain evolution.
- Planetary Science
Lakes of liquid water at Mars’ southern ice cap may just be mirages
In 2018, scientists found evidence for water lakes sitting beneath the southern Martian ice cap. New evidence suggests the lakes might not exist.
- Health & Medicine
Human cells make a soaplike substance that busts up bacteria
Nonimmune cells can fight off pathogens by releasing a detergent-like molecule that dissolves bacterial membranes.
- Science & Society
What 20th century science fiction got right and wrong about the future of babies
A century of science has pushed the boundaries of human reproduction even beyond writers’ imaginations.
- Paleontology
Insects had flashy, noise-making wings as early as 310 million years ago
The structure of a grasshopper-like insect’s fossilized wing suggests it crackled and reflected light, perhaps to attract mates or warn off predators.
- Health & Medicine
Millions of kids have missed routine vaccines thanks to COVID-19
Missed shots due to the pandemic may have cut vaccination rates for measles, diphtheria, tetanus and pertussis to their lowest levels in over a decade.
- Animals
Would dogs return the favor if you gave them treats? It’s complicated
An experiment in which dogs did not reciprocate food giving with humans may reveal something about the dogs, or about how science is done.
