Construction machines can vary in size, depending on the tasks they need to perform. What are some of the largest ...

Quick Take Ruby-throated hummingbirds migrate about 2,000 miles annually from North America to the Yucatan Peninsula and back ...

President Donald Trump, in what was billed as a speech to the nation, tonight mounted a sustained argument for his administration’s economic success, arguing that he’d made significant progress in ...

Chimpanzees are clearly among the most intelligent of all non-human animals, but they are rarely regarded as killers. And yet ...

Welcome to the Defender Trophy, a unique competition that's as much about the journey as it is about the destination.