Stephanie Pappas

Science word of the day: Allele Pronunciation: Ah-LEEL' What it means: Genes contain the instructions for the various proteins that determine traits, such as eye color or blood type.

Science word of the day: Coprolite Pronunciation: KAHP'-ruh-lite What it means: Coprolites are fossilized poop.

What does "covalent" mean?

The last common ancestor of all living things may not have been alive at all Life on Earth is thought to have emerged from the primordial ooze some 4 billion years ago.

Life on Earth is thought to have emerged from the primordial ooze some four billion years ago. Now a provocative new study argues that this miraculous transition from chemistry to biology happened no...

Research is outpacing regulation to govern artificial intelligence-designed biology

A wild cannibalistic sexual behavior in spiders has a simple genetic explanation, new study finds.

Extreme heat will become more common as the climate continues to warm. That will affect almost every facet of our health.

HPV vaccination is helping knock back cervical cancer rates, but meanwhile, mouth and throat cancers caused by the virus are up in men. Here's what to know.

Wildfires are projected to increase dramatically due to climate change. That could trigger a massive increase in heart attacks, premature births and early deaths, research reveals.