Google knows what the world is thinking. Literally.

Earth Day, April 22, is a day to celebrate the environment!

American forces landed on Okinawa during World War II on April 1, 1945.

The "Star-Spangled Banner" was adopted as the national anthem on March 3, 1931.

The first telephone call ("Mr. Watson, come here. I want you.") was made by Alexander Graham Bell on March 10, 1876.

The cotton gin was patented by Eli Whitney on March 14, 1794.