The root system of a tree species is genetically different than the leaves of that individual, potentially modifying scientists’ understanding of evolution.
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Fossils from northern Kenya point to a new human species that lived in Africa nearly 2 million years ago.
Mitochondria mutations that affect male, but not female, aging could explain why women tend to live longer than men.
Researchers track tumors as they develop, providing more support for the idea that cells with stem-cell-like properties underlie cancer growth and recurrence.
Researchers working in war-torn countries find hints to the molecular roots of posttraumatic stress disorder.
At age 16, Alexandra Sourakov has her first scientific publication, on the foraging behavior of butterflies.
Evolving the ability to run may also have made our ancestors smarter, suggesting that exercise can be healthy for the brain as well as the body.
Two whole genome duplications boosted the complexity of the ancestor of all vertebrates, but also introduced potential for disease.
Genomic analyses reveal that the polar bear evolved between 4 and 5 million years ago, far earlier than previous studies had estimated.
A relatively new pair of sex chromosomes in the fruit fly allows researchers to track their evolution from the beginning.
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