Front Cover:
Rink Glacier in western Greenland, with a meltwater lake visible in the center. Credits: NASA/OIB
Back Cover: 
Lighthouse; drawing by D Maya
Front Inside Cover:
Science Cartoon
Back Inside Cover:
Evolution at a glance. The left side shows the evolution of life on planet Earth. The evolution of humans and early humans is very recent and shown separately in the right side picture. Credit: Wikipedia