1) Antarctica is the coldest, driest, and windiest continent on Earth. It is also the highest, with an average elevation of about 7,545 feet (2,300 meters).

2) The word "book" contains two vowels: O and O.

3) The average person spends around six months of their lifetime waiting for red lights to turn green.

4) The world's oldest living plant is believed to be a clonal shrub called "Old Tjikko" in Sweden, estimated to be over 9,500 years old.