Staff and science cut as museum's endowments crash.

An arachnid with no talent for weaving may have excreted the first known spider silk 386 million years ago.

Groups argue that an impact wasn't to blame.

Proclamation on biomedical science and reproductive medicine revised.

Mouse and fruitfly studies provide clues to the origins of species.

Dispute could stymie efforts to save rare honeycreeper.

Why movement researchers are pushing for a unifying framework.

More than two-thirds of bacteria may have descended from a land-dwelling ancestor.

Biologists have tracked the origins and evolution of a type of childhood leukaemia that is deadliest when it recurs.

Chinese fossil forces palaeontologists to rethink turtle origins.

The hair on a horse's head could predict whether it is left- or right-hoofed.

First evidence that earliest fossils could be attributed to protozoans.

Celebrating the man and the book.

The idea that natural selection acts on groups, as well as individuals, is a source of unending debate. Marek Kohn reports on what the two sides disagree about #20; and why it matters to them.

Evolution assumes that extinction is forever. Maybe not. Henry Nicholls asks what it would take to bring the woolly mammoth back from the dead.

A celebration of one of evolution's crowning glories.

The sculpin could reveal how some ocean dwellers made the jump to life in fresh water.

Scientists chart course for studies of humans' closest relatives.

Ancient tools give up their makers' secrets.

Quite well, on the whole.