|
|
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.