Humans have long sought to geoengineer the Earth’s environment. Tim Flannery outlines a few of the wildest ideas from the 20th century ...

President Donald Trump will deliver remarks ahead of a historic fireworks celebration in Washington, DC, to mark America's ...

Photos and videos of Americans who put up with record heat and rain to celebrate the nation's 250th birthday with massive ...

The Earth is four and a half billion years old, so why they started appearing then is unknown, as is the mechanism to make ...

Here are seven takeaways from July 4 celebrations, including Trump's views on history, the military and election legislation.