1) The word "forest" contains two vowels: O and E.

2) The largest known dinosaur, Argentinosaurus, weighed around 70-100 tons and measured up to 100 feet in length.

3) The Himalayas, known as the "Roof of the World," are home to numerous majestic peaks, cultural diversity, and unique wildlife.

4) The highest-grossing concert tour of all time is U2's "360° Tour," which earned over $735 million in ticket sales.