Can you power a car with pond weed? In searching for alternatives to fossil fuels, scientists are like detectives. They pursue clues--including investigating algae as a possible new energy source.

This book takes young readers inside laboratories to watch as scientists grapple with finding safe and cost-effective ways to harness alternative energy sources. Solar, wind, nuclear, geothermal, and biomass are discussed, and also introduced are futuristic technologies on the cutting edge of research today.

Thaddeus shares her conversations with scientists and plunges young readers into the...