Airlines have long treated thunderstorms, snow and volcanic ash as the main reasons to slow or stop flights. Now a new hazard ...

Warnings that humanity is heading toward its own disappearance have shifted from the fringes of science fiction into mainstream research and public debate. Instead of vague prophecies, scientists now ...

For more than a century, scientists have wondered why physical structures like blood vessels, neurons, tree branches, and ...

Background Annually, 4% of the global population undergoes non-cardiac surgery, with 30% of those patients having at least ...