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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.