What major milestone in air exploration occurred in 1903? Find out in this photo time line.

Who is considered the world’s greatest living explorer? Find out in the online quiz.
Find out when the first compass was invented. See the highlights of human land exploration in this photo time line.

How deep is the deepest part of the ocean? Test your ocean exploration IQ with the online quiz. Who sailed first, the Vikings or the Phoenicians? Check out the highlights of human sea exploration in this photo time line.