Turn your smartphone into a professional car diagnostic tool with a $15-30 OBD2 adapter and free apps that read engine codes in seconds.
Modern cars don't have mechanical oil pressure gauges anymore, so you'll be in the dark until that moment when the low oil pressure warning light flickers on. And since no one brags about the oil ...
Just a few years ago, in a galaxy 848 million light-years away, astronomers witnessed something strange happen. The supermassive black hole (SMBH) at the center of this galaxy was chugging along just ...