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Hunting Regulations Shape Brown Bears’ Care for Cubs
Hunting Regulations Shape Brown Bears’ Care for Cubs
Scandinavian mother bears gain a survival advantage by weaning their babies later than normal, analysis of a 30-year dataset suggests.
Hunting Regulations Shape Brown Bears’ Care for Cubs
Hunting Regulations Shape Brown Bears’ Care for Cubs

Scandinavian mother bears gain a survival advantage by weaning their babies later than normal, analysis of a 30-year dataset suggests.

Scandinavian mother bears gain a survival advantage by weaning their babies later than normal, analysis of a 30-year dataset suggests.

proteins, ecology, microbiology, immunology
Amazonians Offer Clues to Human Childhood Development
Amazonians Offer Clues to Human Childhood Development
Shawna Williams | Jul 1, 2018
A study of Shuar children in Ecuador provides a window into how the human body responds to infection in the sorts of conditions that shaped our species’ evolution.
Scientists  Bring  Ancient  Proteins  Back  to  Life
Scientists Bring Ancient Proteins Back to Life
Amber Dance | Jul 1, 2018
Researchers are resurrecting proteins from millions of years ago to understand evolution and lay the groundwork for bioengineering custom molecules.
New Caledonian Crows Build Tools From Mental Images, Not Lessons
New Caledonian Crows Build Tools From Mental Images, Not Lessons
Sukanya Charuchandra | Jun 29, 2018
When it comes to tool making, the birds learn differently than humans.
World First: Human Case of Keystone Virus Identified
World First: Human Case of Keystone Virus Identified
Kerry Grens | Jun 22, 2018
A Florida teenager is the first person with a confirmed infection by the mosquito-borne virus.
Image of the Day: Ray of Light
Image of the Day: Ray of Light
Sukanya Charuchandra | Jun 22, 2018
The discovery of the world’s first known manta ray nursery will offer a glimpse into the animals’ juvenile stage.
Image of the Day: Performance Anxiety
Image of the Day: Performance Anxiety
Sukanya Charuchandra | Jun 21, 2018
In the presence of competition, archerfish become more hesitant but accurate shooters.
Image of the Day: Snacking on Snails
Image of the Day: Snacking on Snails
Sukanya Charuchandra | Jun 20, 2018
Five newly identified species of snakes suck the mollusks right out of their shells.  
Image of the Day: Multiple Choice
Image of the Day: Multiple Choice
Sukanya Charuchandra | Jun 19, 2018
Photosynthesis can happen in more than one way.  
Opinion: Constrain Speculation to Protect the Integrity of Science
Opinion: Constrain Speculation to Protect the Integrity of Science
Mike Klymkowsky | Jun 18, 2018
What we can know about biology before the last universal common ancestor is limited—and we should be circumspect in filling in the gaps.