Researchers are working speedily to find a cure for a new virus that causes birth defects and stillbirth in cows, sheep, and goats.

A list of this year’s newsworthy successes—and failures—in drug development

Researchers identify a protein in semen that enhances the transmission of HIV in culture, but whether it increases infectivity in humans is not yet known.

Gene expression controlled from afar may have spurred the spurt in brain evolution that led to modern humans.

Japanese researchers are launching an iPS cell trial for an untreatable eye disease, challenging ongoing embryonic stem cell trials.

New findings challenge long-held views about the mechanism yeast cells use to live forever.

Traits that help one sex but hurt the other are not sufficient for maintaining genetic variation.

After completing his studies in medicine and biology, Prussian naturalist Ernst Haeckel set off for Italy in 1859, where, in addition to painting landscapes, he spent the climactic months of his stay glued to his microscope observing and sketching.

After completing his studies in medicine and biology, a restless Ernst Haeckel set off for Italy in 1859 to study art and marine biology. The diversity of life fascinated the 26-year-old Prussian, and in addition to painting landscapes, he spent the

A young botanist pays tribute to his mentor by naming a newly discovered, rare species in his honor.

The discovery of a new and mysterious form of radiation in the late 19th century led to a revolution in medical imaging.

Editor's choice in developmental biology