Fossils of African Fauna
African, Arabian Mammals Didn’t Escape Grande Coupure Extinction
More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.
African, Arabian Mammals Didn’t Escape Grande Coupure Extinction
African, Arabian Mammals Didn’t Escape Grande Coupure Extinction

More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.

More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.

rodent
Pain Researcher Quits Academia, Takes Lab Home with Him
Jef Akst | May 1, 2021
After resigning from the University of New England last year, Geoffrey Bove continues to study the effects of massage on rats in a facility he set up in his house.
Clues to the Origin and Function of the Brain’s Alpha Waves
Amanda Heidt | Oct 1, 2020
Patterns of neural activity known as alpha waves, long thought to originate in the thalamus, may actually stem from a different brain region entirely.
What Do New Neurons in the Brains of Adults Actually Do?
Ashley Yeager | May 1, 2020
Adult neurogenesis, already appreciated for its role in learning and memory, also participates in mental health and possibly even attention, new research suggests.
Infographic: How Adult-Born Neurons Integrate into the Brain
Ashley Yeager | May 1, 2020
Cutting-edge microscopy is revealing how new neurons made in adult mice’s brains tap into existing neuronal connections.
How Manipulating Rodent Memories Can Elucidate Neurological Function
Amber Dance | May 1, 2020
Strategies to make lab animals forget, remember, or experience false recollections probe how memory works, and may inspire treatments for neurological diseases.
Image of the Day: Big Body, Little Brain
Amy Schleunes | Feb 20, 2020
An extinct rodent relative of the capybara appears to have had a smaller brain-to-body ratio than similar species.
Forced-Swim Test Criticized as Uninformative, Cruel
Catherine Offord | Jul 22, 2019
Some researchers and animal rights groups are amplifying their opposition to an assay that measures how long a rodent tries to stay afloat.
AI mice in labs
Opinion: AI Beats Animal Testing at Finding Toxic Chemicals
Thomas Hartung | May 1, 2019
Machine learning could be the key to reducing the use of animals in experiments.
Cannabinoid Exposure During Adolescence Disrupts Neural Regulation
Jef Akst | Nov 6, 2018
Young rats injected with a synthetic cannabinoid have more of the brain’s motivating dopaminergic signaling and fewer numbers of inhibitory neurons than controls.
Maternal Obesity and Diabetes Linked to Autism in Children
Sukanya Charuchandra | Oct 1, 2018
Inflammation may be a strong contender for the connection between mom’s weight and children’s neurodevelopment, according to lab studies on animals.
Former Students Allege Mistreatment of Lab Animals at Calgary 
Catherine Offord | Aug 9, 2018
The university is carrying out a review of animal handling in the now-closed lab of neuropsychologist Vedran Lovic.
CDC Identifies Seoul Virus Outbreak Among Pet Rat Owners
Diana Kwon | Feb 5, 2018
These are the first known cases of individuals catching the virus from their pets in Canada or the U.S.
California’s Owls Being Exposed to Rat Poison
Catherine Offord | Jan 14, 2018
Researchers suspect the source of the toxins may be some of the state’s 50,000 or so marijuana farms.
Hibernating Rodents Feel Less Cold
Abby Olena | Dec 19, 2017
Syrian hamsters and thirteen-lined ground squirrels are tolerant of chilly temperatures, thanks to amino acid changes in a cold-responsive ion channel. 
Rats that Run Have Better Memory
Jef Akst | Aug 14, 2017
Male rodents given access to a running wheel early in life show increased neural activity and improved memory as adults.
Study: Rat Moms’ Diets Affect Offspring Obesity Risk
Jef Akst | Dec 14, 2016
Female rats fed a typical Western diet had offspring that were at higher risk of obesity than moms fed low-fat, high-grain meals.
Gut Microbiota–Obesity Link Clarified
Catherine Offord | Jun 9, 2016
Changes in diet can cause gut microbes to produce acetate, which in turn stimulates insulin secretion and obesity in rodents, scientists show.
Heart-Healthy Hibernators
Jef Akst | Jan 1, 2016
Overwintering ground squirrels survive fluctuations in body temperature that would cause cardiac arrest in nonhibernators.