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Woman with buns and blue sweater chewing gum, smiling, and stretching pink gum out of her mouth. 
The Energetic Cost of Chewing May Have Shaped Hominin Evolution
The simple act of chewing gum can raise the body’s metabolic rate by as much as 15 percent, a study finds.
The Energetic Cost of Chewing May Have Shaped Hominin Evolution
The Energetic Cost of Chewing May Have Shaped Hominin Evolution

The simple act of chewing gum can raise the body’s metabolic rate by as much as 15 percent, a study finds.

The simple act of chewing gum can raise the body’s metabolic rate by as much as 15 percent, a study finds.

chimpanzee, evolution

tibetan mastiff with ghostly wolves in the background
The Extinct Species Within
Christie Wilcox, PhD | Aug 6, 2021 | 10+ min read
The genomes of living animals are littered with DNA from long-gone relatives, providing a lens on evolution, past extinctions, and perhaps even solutions to agricultural problems.
Image of the Day: Brains and Braincases
Emily Makowski | Oct 18, 2019 | 1 min read
The skull changed shape in different ways than the brain during evolution, according to a new comparative study.
chimpanzee testes
Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones
Katarina Zimmer | Apr 16, 2019 | 4 min read
For primates, males’ fancier ornaments are linked with smaller testes, according to a new comparative study.
Decoding Human Accelerated Regions
Katherine S. Pollard | Aug 1, 2016 | 10 min read
Do the portions of our genomes that set us apart from other animals hold the secret to human evolution?
Contributors
The Scientist | Aug 1, 2016 | 3 min read
Meet some of the people featured in the August 2016 issue of The Scientist.
Understanding Human Accelerated Regions
Katherine S. Pollard | Jul 31, 2016 | 1 min read
Fast-evolving regions of the human genome differentiate our species from all other mammals.
Nailing Down HAR Function
Katherine S. Pollard | Jul 31, 2016 | 1 min read
A remaining challenge in the study of human accelerated regions (HARs) is establishing their specific functions during development and other biological processes.
Speaking of Science
The Scientist | Jul 1, 2015 | 2 min read
July 2015's selection of notable quotes
Behavior Brief
Jenny Rood | Apr 8, 2015 | 6 min read
A round-up of recent discoveries in behavior research
Chimps Empath-eyes?
Jyoti Madhusoodanan | Aug 24, 2014 | 2 min read
Chimpanzees may reinforce social bonds by involuntarily mimicking a fellow chimp’s pupil size.
Inherited Intelligence
Ruth Williams | Jul 10, 2014 | 3 min read
Cognitive testing in chimpanzee pedigrees reveals a genetic basis for intelligence.
Bipedal Beginnings
Tracy Vence | Dec 4, 2013 | 1 min read
Re-examination of a thigh bone from one of the earliest putative hominins could impact scientists’ understanding of the origins of human bipedalism, a study suggests.
Brain Evolution at a Distance
Hannah Waters | Dec 6, 2011 | 3 min read
Gene expression controlled from afar may have spurred the spurt in brain evolution that led to modern humans.
Chimp Brains Don’t Shrink with Age
Tia Ghose | Jul 25, 2011 | 2 min read
Unlike human brains, chimpanzee brains don’t get smaller as they age, suggesting that pronounced neurological decline is a uniquely human byproduct of our oversized brains and extreme longevity.
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