Danielle Smith Llera: 6 books

A massive tsunami caused by the strongest earthquake to ever hit Japan triggered the world's worst nuclear crisis since the Chernobyl accident 25 years earlier. The monster waves that crashed into the Fukushima Daiichi nuclear plant in March 2011 killed 15,000 people and caused nuclear reactor meltdowns...

The Revolutionary War was a bloody eight-year battle. Follow the war from the first gunshot in Lexington to the signing of the Treaty of Paris, and see how America's fight for independence unfolded. Meets Common Core standards for analyzing chronology text structures.

Millions of tons of plastic slip into oceans every year. Some floats and travels slowly with the currents, endangering the health of marine animals. The rest is hardly visible but is far more dangerous. Tiny bits of plastic sprinkle the ocean's surface or mix into the sandy seafloor and beaches. It...

To the untrained eye, Photo 51 was simply a grainy black and white image of dark marks scattered in a rough cross shape. But to the eye of a trained scientist, it was a clear portrait of a DNA fiber taken with X-rays. And to young scientists James Watson and Francis Crick, it confirmed their guess of...

Weighing as much as a small car, a rover named Curiosity rolls quietly around Mars. Scientific instruments pack its body and cluster at the end of a mechanical arm. An arrangement of lenses and instruments tops its mast, like a face. To the many NASA workers involved in Curiosity’s mission on Mars,...

George Washington knew he was setting an example in everything he did. The first American president had been a heroic military commander during the Revolutionary War, leading his forces to victory. As president he would guide the citizens of a new republic with a strong central government. No more would...