Ancient Beads Point to Far-Flung Relationships in Southern Africa
Ancient Beads Point to Far-Flung Relationships in Southern Africa
An isotopic analysis of eggshell beads dating back more than 30,000 years indicates that they helped build networks that stretched for hundreds of kilometers.
Ancient Beads Point to Far-Flung Relationships in Southern Africa
Ancient Beads Point to Far-Flung Relationships in Southern Africa

An isotopic analysis of eggshell beads dating back more than 30,000 years indicates that they helped build networks that stretched for hundreds of kilometers.

An isotopic analysis of eggshell beads dating back more than 30,000 years indicates that they helped build networks that stretched for hundreds of kilometers.

behavior
Innovative Birds Face a Lower Risk of Extinction
Innovative Birds Face a Lower Risk of Extinction
Michael Graw | Jul 13, 2020
Species that come up with new ways to find food may be more likely to survive in habitats disturbed by agriculture and other human activities.
How Squirrels Use Bird Chatter to Assess Safety
How Squirrels Use Bird Chatter to Assess Safety
Shawna Williams | Jun 1, 2020
An undergraduate research project finds the animals are tuned in to reassuring information from other species.
Environmental Factors Don’t Explain Rise in Autism Prevalence
Environmental Factors Don’t Explain Rise in Autism Prevalence
Peter Hess | May 22, 2020
A large twin study in Sweden finds genetics has a much larger influence on the odds of an autism diagnosis, and has remained consistent over time.
Deep Brain Optogenetic Control Without Implants
Deep Brain Optogenetic Control Without Implants
Ruth Williams | Apr 30, 2020
Engineering an ultra-sensitive light-activated ion channel into brain cells allows for the control of neurons in live animals without a brain-implanted light source.
Addictive Behavior Control Circuit Discovered in Rat Brains
Addictive Behavior Control Circuit Discovered in Rat Brains
Lisa Winter | Jan 3, 2020
Some rats showed a decrease in addictive tendencies when researchers activated the pathway, while the behavior of others became more addictive when the pathway was inhibited.

Image of the Day: Black Cats
Image of the Day: Black Cats
Emily Makowski | Dec 19, 2019
Melanism in felines is both helpful and harmful.
Serotonin and Dopamine Responsible for the Pros and Cons of MDMA
Serotonin and Dopamine Responsible for the Pros and Cons of MDMA
Ruth Williams | Dec 11, 2019
A study in mice suggests serotonin release underlies the drug’s prosocial effects while dopamine mediates the rewarding properties that drive its potential for abuse.
Single-Celled Organism Appears to Make Decisions
Single-Celled Organism Appears to Make Decisions
Ruth Williams | Dec 5, 2019
The unicellular species Stentor roeseli performs a form of sequential decision-making to avoid irritating stimuli.
Microfluidic Chambers Trigger Sleep in <em>C. elegans</em>
Microfluidic Chambers Trigger Sleep in C. elegans
Alejandra Manjarrez | Nov 19, 2019
This newly described behavior occurs spontaneously, but can be modulated by food availability, temperature, and the size of the chambers.