Astronomers observe a rare supernova—the closest to Earth in nearly a century.
Biodiversity loss may be encouraging the increase in Lyme disease.
Prey strike back! For ground beetle larvae, predators are on the menu.
The WISE mission catches sight of a faint, elusive type of brown dwarf.
Thanks to local people, a Mexican marine park makes a record recovery.
In 2010, El Niño switched quickly to a strong La Niña, resulting in intense weather.
Traumatic experiences can alter how the brain looks and works.
Scientists map Port-au-Prince's earthquake zone in detail.
Accidental netting of related dolphins threatens their genetic future.
Scientists suspect a distant planet has a magnetic field.