Romans used a plant called Silphium as contraception. They had so much sex that they drove it into extinction.
24
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
153
Scientists are excavating the ruins of a major civilization which pre-dates both the pyramids and Stonehenge by over 7,000 years. In 15 years, they have uncovered only about 5% of the site.
21
The U.S. motto, 'In God We Trust', was not adopted as the national slogan until 1956.
72
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
In 1980, the city of Detroit presented Saddam Hussein with a key to the city.
29