Why isn't there an endless variety of planets in the universe? An astrophysicist explains why planets only come in two flavors.
As an escalating viral outbreak unfolds in China, only one lab in the country meets the required biosafety standards needed to study the new disease.
The world's oldest known impact crater has been in Western Australia for more than 2.2 billion years, a new study suggests.
Anthropologist reveals a potentially big flaw in the Search for Extraterrestrial Intelligence (SETI).
A new technique for studying ancient microbes in glaciers has led to the discovery of previously unknown viruses.
Stunning ancient rock carvings that portray an Assyrian king paying homage to his gods amid a procession of mythical animals have been unearthed in the Kurdistan region in the north of Iraq.
The amygdala is often referred to as the "fear center" of the brain — but this name hardly does justice to the amygdala's complexity.
There's a faint gamma-ray background in the universe, and scientists now think it could be caused by dark matter.
Hair loss is typically considered the domain of aging men, but this equal-opportunity condition — which has many causes — can affect virtually anyone.
Scientists are searching for a ghostly neutrino particle that acts as its own antiparticle. If they find it, the discovery could resolve a cosmic conundrum: Why does matter exist at all?
The great distances covered by visiting "aliens" may be ones of time rather than space, a recent book argues.