There were more complications on Apollo 13's failed lunar mission than most people realize. The astronauts carried plutonium on the lunar module they brought back to Earth with them.
What Is the Black Hole Information Paradox? A Primer
Jason Drakeford, Clara Moskowitz, Jeffery DelViscio and Sunya Bhutta
Dive into a Vanishing Invisible Forest to See What Climate Has Changed
Dominic Smith and Andrew Robinson