The fossil tooth found in the Annamite Mountains in Laos
Ancient Tooth Could Be Clue in Denisovan Migration Mystery
Andy Carstens | May 18, 2022
The new fossil from Laos helps answer the question of how some people from Oceania carry DNA from the ancient hominin.
Two bonobos facing each other on a tree branch
Q&A: In Battle of the Sexes, Dominance Doesn’t Always Equal Power
Raegan Scharfetter | May 18, 2022
The Scientist spoke to hyena researcher Eve Davidian for a broad look at power relationships between male and female mammals.
A mosquito sucks blood from human skin
Malaria Mosquitoes Bite More During the Day Than Previously Thought
Andy Carstens | May 17, 2022
While malaria control strategies have focused on mosquitoes’ nocturnal activity, almost one-third of bites occur while the sun is up, a new study estimates.
Woman in face shield and blue gown taking cotton swab of patient's mouth while patient sits inside of car
What You Should Know About New Omicron Subvariants
Natalia Mesa | May 17, 2022
The presence and spread of new, more-infectious and immune-evading variants show that the coronavirus is not done mutating.
Group of cells stained in either blue or green in a black background.
Diabetes Marker Linked to COVID-19 Severity in Mice
Alejandra Manjarrez | May 16, 2022
A sugar that’s less abundant in the blood of people with diabetes binds to SARS-CoV-2’s spike protein and disrupts the virus’s ability to fuse with cells.  
brown spotted octopus blending in with its background
Steroids May Explain Octopuses’ Self-Starvation
Andy Carstens | May 16, 2022
Two glands increase steroid production after female California two-spot octopuses mate, a study finds. Those hormones may be responsible for the animals’ self-destructive behavior.
spikes of white coral underwater
Great Barrier Reef Suffers Sixth Mass Bleaching in Two Decades
Bianca Nogrady | May 14, 2022
A survey showed that 91 percent of the reef experienced bleaching despite this year’s cooler, wetter conditions associated with the La Niña weather pattern.
a Hawaiian bobtail squid (Euprymna scolopes) resting on a reflective surface
Reshuffled Genomes May Explain Cephalopods’ Smarts
Sophie Fessl | May 13, 2022
In two related studies, researchers describe huge chromosomal rearrangements and about 500 novel gene clusters in the octopus, squid, and cuttlefish genomes, which they say could help explain how they evolved their extraordinary brains.
Senior woman wearing a grey pullover sitting on a bed and holding her back.
Early Inflammation Protects Against Chronic Pain, Study Finds
Alejandra Manjarrez | May 12, 2022
Human data and experiments in mice challenge the common use of anti-inflammatory drugs to treat pain.