Book

On June 10, 2003, a little rover named Spirit blasted off on a rocket headed for Mars. On July 7, 2003, a twin rover named Opportunity soared through the solar system with the same mission: to find out if Mars ever had water that could have supported life.A thrilling addition to the acclaimed Scientists in the Field series, The Mighty Mars Rovers tells the greatest space robot adventure of all time through the eyes—and heart—of Steven Squyres, professor of astronomy at Cornell University and lead scientist on the mission.

After more than a century of peaceful dormancy, the volcano Nevado del Ruiz in Columbia, South America, erupted. Blistering clouds of searing volcanic gases and ash flash-melted huge amounts of snow, launching a towering wall of hot mud toward the village of Armero. People ran - but they couldn't outrun the onslaught, and 23,000 perished.

They have a touch so feather-light, it can barely be felt on human skin. The vividly gold and black colored golden orb weaver spider is the largest web-making spider on the planet. These elegant and efficient arachnids can weave impressive webs up to three feet wide in less than an hour. And these spiders' silk-spinning abilities could have far-reaching implications for science and medicine.

Because it is home to anacondas weighing over three hundred pounds, Goliath birdeater tarantulas with a leg span the size of your face, and electric eels who have enough voltage to stun a horse, you might think the Amazon is a place that can cause more harm than good. But you'd be wrong...

Considered the "lungs of the world," the Amazon provides a full fifth of the world's oxygen, and every year unsustainable human practices destroy 2.7 million acres of it. What can be done to help? That's where Project Piaba comes in.