Add Yahoo as a preferred source to see more of our stories on Google. BEIJING, June 26 (Reuters) - An aircraft about the size of a car crashed into Beijing's tallest building on Friday, witnesses told ...

The car’s driver-assistance system was in use when the crash killed a woman on Friday, the police said. By Lauren McCarthy The main federal auto safety agency said on Monday that it was investigating ...

The RNA world hypothesis proposes that early life was based on RNA, which subsequently devolved the storage of information to more stable DNA, and catalytic functions to more versatile proteins.