91色情片

91色情片

Hunter-gatherers cared for first known ancient invalid

Too old to hunt, he probably needed a cane and suffered terrible back pain 鈥� and other early humans 500,000 years ago must have looked after him

Life

Trademark swimsuit gave penguin ancestors the edge

Environment

Large brains bust baggage allowance for migratory bats

Humans

Sparks fly over origin of altruism

Life

Cosmic accidents: One giant leap for a single cell

Earth

Cosmic accidents: Killer asteroid with a silver lining

Earth

Cosmic accidents: Brains or brawn 鈥� which was best?

Humans

Cosmic accidents: Inventing language, the easy way

91色情片

City-dwelling helped us evolve resistance to disease

91色情片

Cousin virus suggests HIV may be deadly for millennia

Simian immunodeficiency virus, which does not cause AIDS but gave us HIV, seems far older than we thought 鈥� dashing hopes that HIV might weaken soon

Environment

Religious rite gives evolution a helping hand

Life

Turing formula poses plain origin for intricate skins

Humans

Thank the ur-worm for Shakespeare’s brain

Humans

Do Egyptian mummies have a right to privacy?