1) The first sound film, "The Jazz Singer," was released in 1927 and marked the transition from silent movies to "talkies."

2) The Earth's core is hotter than the surface of the Sun.

3) The process of nuclear fusion powers the sun and other stars, fusing hydrogen atoms together to form helium and releasing vast amounts of energy in the process.

4) The average person spends about 4 years of their life driving a car.