One barrel of petroleum holds 42 gallons.
20
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5