The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

A fossil that has puzzled scientists for over 150 years is possibly the largest scorpion known to exist.

Researchers were unsure whether alpha particles would aid or hinder fusion. Simulations suggest they help, by dampening ...

At least a dozen animals have been found with the flesh-eating maggots. It could take more than a year to eradicate the ...

A newly-described dinosaur, Jian changmaensis, may have glided through northwestern China about 120 million years ago, ...

An imaging study found early signs of coronary artery disease in people in Canada breathing air that regulators consider ...

Detached tissues from the sea cucumber's tube feet and feeding tentacles survived for more than three years, a find that ...

Vast permafrost beneath the upper slopes of Peru’s tallest volcano could become a regional water source as glaciers in the ...

The fungus has another unusual means of spread: Cats can sneeze out infectious yeast, researchers reported in Medical ...

Emerging research suggests overusing digital devices can be harmful, especially to mental health. But does being overly ...

Viking 1 kicked off the search for Martian life 50 years ago. Now NASA’s shifting priorities are putting the quest in limbo.

Past super El Niños have brought bad flooding, deadly fires and disease outbreaks. Climate experts already expect “shockingly ...