MIT Technology Review - Why We Still Don't Have Birth Control Drugs for Men
"Investigators working on male contraceptive drugs say there are two major challenges to bringing these products to the market. For one, blocking the production of millions of sperm per day in men versus preventing the release of one egg per month in women is just more complicated, biologically speaking. Secondly, there’s little funding available for clinical trials of these drugs."
Atlas Obscura - The Legendary Chinese Poison Made by Forcing Snakes, Scorpions, and Centipedes to Fight
"Gu poison, so the stories went, was collected by sealing venomous snakes, scorpions, and centipedes in a jar and forcing them to fight and devour each other."