Latest articles by Jennifer Welsh
Did a Copying Mistake Build Man's Brain?
A copy error created a duplicate gene that changed our brains.
Giant Ice:Photos of Greenland's Glaciers
The Greenland Ice Sheet is one of the largest blocks of ice on earth.
Greenland Glaciers Are Speeding Up
Luckily, Greenland isn’t melting as fast as previous theories suggested.
Baby Brains May 'Wake Up' Before Birth
Chickens, and possibly human babies, sleep and wake before being born.
Stem Cells Carry 'Suicide Pills' for Instant Death
Stem cells are the CIA of the cell; they carry instant-suicide pills up their shirtsleeves
The Bigger the Eyes the Faster the Beast, Study Finds
Better to see you with when whizzing by, it turns out.
Dolphins Help Fishermen Catch Fish
One social group of dolphins works with fishermen, while other local groups find food in other ways.
Slacker or Go-Getter? Brain Chemical May Tell
Dopamine levels in three brain regions determine how hard someone is willing to work.
Multitasking Makes Us Work Bad, Feel Good
Multitasking kills productivity, but keeps us entertained.
Strange Organism Has Unique Roots in the Tree of Life
Protozoan genes suggest they are the oldest members of the tree of life containing humans
Why Pygmies of Africa Are So Short
The four foot eleven pygmy can blame his genetic heritage for his height.
For Males Dying to Mate, Only Certain Females Will Do
When you give your life for sex, what makes the best mate?
Birds Form Alliances With Long-Term Neighbors
Neighbors will jump in to help the great tits scare off predators
Ancient Horse Bones Tell Story of Tibetan Plateau
The bones say the plateau has been sky-high for millions of years.
High & Dry: Images of the Himalayas and the Tibetan Plateau
The "Roof of the World" is a harsh environment, nestled between the Himalayas, 14,700 feet up.
Genes Reveal Secrets of Ancient Peruvian Families
The male-run families traded their sisters for wives.
Ancient 'Bone Box' Called Oldest Christian Artifact
At first-unnoticed lettering in an ancient Jerusalem tomb identifies first-century artifacts as Christian, researchers say.
Endangered Beauties: Images of Polar Bears
The polar bear's habitat is shrinking due to global warming, so enjoy them while they are still around!
Dawn of Polar Bears Far Earlier Than Thought
New data overturns thinking on polar bear ancestry
Tasmanian Tiger Was Genetically Doomed
Though hunted to extinction by humans, the Tasmanian tiger probably wouldn't have made it anyway.
How Humans Grew Fruitful by Devouring Meat
Researchers explain how meat made the world
