Like some other kids, 12-year-old Trevor McKinney believed in the goodness of human nature. Like many other kids, he was determined to change the world for the better. Unlike most other kids, he ...

A seven-mile-wide space rock is hurtling toward Earth, threatening to obliterate the planet. Now, it's up to the president of the United States to save the world. He appoints a tough-as-nails ...