Jeff De la Rosa

"Describes toy robots and other robots built for entertainment"--

"The climate has changed many times throughout Earth's 4.5-billion-year history. But such changes have never happened as quickly as those happening today. In [this book], learn how the climate is changing, how scientists study that change, and why most of them think human activities are causing it."--Back cover

"Describes robots built to help out around the home and office"--