Explores the idea that there are other beings than humans in the universe and that they have visited Earth throughout the history of mankind, discussing UFOs, alien abductions, crop circles, possible alien influence on early cultures, and more.

This book explores the mysterious and unusual animals as well as plant life, wrecks, and treasures that may be found in the ocean.

Explores the mysterious and unusual animals as well as plant life, wrecks, and treasures that may be found in the ocean.

A look at dinosaurs, including two new giants, Afrovenator and Carcharodontosaurus, and what they can tell us about our past.