History's Greatest Mysteries: History's Secrets of the Air and Sea
TABLE OF CONTENTS CHAPTER 1 Uncharted Territory 4 CHAPTER 2 The Ghost Ship 6 CHAPTER 3 X Marks the Spot 14 CHAPTER 4 The Final Flight 22 Making Connections 30 Glossary 31 Index 32 Online Resources 32
CHAPTER 1 UNCHARTED TERRITORY For humans the last century and a half has been transformative In 1903 we took our first flight in an airplane In 1969 we walked on the moon And yet while we’ve used boats for thousands of years just about five percent of the seafloor has WATCH A VIDEO HERE 4
Much of the ocean is too deep for humans to explore it been mapped leaving most of Earth unexplored It’s no wonder the sea and the salty air just above the surface hold so many secrets 5
