1. Japan uses the most energy per year than any other country.

2. Just by recycling one aluminum can, enough energy would be saved to have a TV run for three hours.

3. On average, there is about three molecules of ozone for every 10 million air molecules.

4. One tree can filter up to sixty pounds of pollutants from the air each year.

5. Orville Wright, a pilot, was involved in the first aircraft accident. His passenger, a Frenchman, was killed.

6. Roses generally need around 6 hours of sunlight to grow properly.

7. The Great Comet of 1843 had a tail that was over 300 kilometres long.

8. The Hubble telescope is so powerful that it is like pointing a beam of light at a dime that is two hundred miles away.

9. The USSR launched the world's first artificial satellite, Sputnik 1, in 1957.

10. The United States has paved enough roads to circle the Earth over 150 times.

11. The external tank on space shuttles is not painted. It is the only part of the shuttle that is lost after launch, so it is not necessary to worry about metal corrosion.

12. The first domain name ever registered was Symbolics.com on March 15, 1985.

13. The first jet engine was invented by Frank Whittleof of England in 1930.

14. The first spacecraft to visit the planet Venus was Mariner 2 in 1962.

15. The first subway system in America was built in Boston, Massachusetts in 1897.

16. The iron disulfide (Pyrite) is considered "fool's gold" because it looks very similar to gold.

17. The longest recorded duration of a total solar eclipse was 7.5 minutes.

18. The speed of sound must be exceeded to produce a sonic boom.

19. The stapler was invented in Spring Valley, Minnesota.

20. The tip of a bullwhip moves so fast that it breaks the sound barrier. The crack of the whip is actually a tiny sonic boom.