Post-socialist cities like Sofia in Bulgaria, aren't known for their architectural diversity. They tend to be a bit monotonous. And rusty. Very rusty. SEE ALSO: This city has no monuments to women so ...

Since their discovery in the 1950s, metallocenes—chemical compounds where a metal atom sits "sandwiched" between two carbon rings—have been at the heart of organometallic chemistry research, finding ...

The robotics startup Figure AI livestreamed humanoid robots placing thousands of packages onto a conveyor belt for more than a week—a spectacle that included a robot competing against a human intern ...