We’ve all suspected that humans arrived in the Americas much earlier than was long thought by the researchers and historians. The ancient footprints scattered along the dried up lakebed of Lake Otero ...

The partial vertebra appeared inside a 2.5-inch-diameter column of rock that researchers drilled, earning the title of the ...

Scientists at the Denver Museum of Nature & Science are celebrating a discovery that they have called "nothing short of ...

WE’VE BEEN free to pollute ever since we started using fossil fuels more than 145 years ago. Since then, we have been ...

One of the US Senate's leading climate advocates says President Donald Trump's administration no longer governs -- it ...