A planet with twice Earth's gravity produces creatures with different skeletal requirements, different muscular architecture, ...

Teetering near endangered status, the starlet sea anemone produces “an ancient mechanism” for fighting viruses that ...

Some frogs have evolved features so strange that scientists struggle to explain them, and a few look less like amphibians ...

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Lionfish, mitten crabs and “sea vomit.” Meet eight marine species inadvertently brought to new territory that are taking the ...