(a) ancient rock engravings in Shuwaymis, Saudi Arabia, provided insights in historic local fauna and ecosystems (photo by ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Often called the ...

The Center for Scientific Integrity — the non-profit organization that runs Retraction Watch — has launched a project aimed at rounding up flawed and fake medical-research papers and neutralizing ...