Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

The Trump administration promise to apprehend and deport undocumented immigrants has sent Colorado laborers into survival ...

The first regular-season AP Top 25 is typically an overhaul from the preseason poll as voters get a better sense how good ...

The 3D-mapping app now includes 15 million more acres of Avalanche Terrain Exposure Scale coverage in North America.

The Aedes aegypti mosquito that can carry dengue was thought to be too reliant on a hot and wet climate to survive in the ...

The families of at least nine campers and counselors who died at Camp Mystic filed lawsuits alleging “gross negligence and ...

Take them out, then climb the ladder. Go around the corner, jump over the big gap in the path, and then interact with the ...

It was thought that Aedes aegypti could not survive in the Mountain West. But now, a population is thriving in Colorado.

Switzerland’s towering peaks, ancient glaciers, deep valleys and massive lakes add up to one of the world’s premier outdoor ...

Discover how Byrna Technologies drives revenue growth with AI marketing and retail expansion in the booming non-lethal ...

When a society collapses, humans need places to gather. A 5,000-year-old ceremonial site shows how ancient people dealt with ...