Mike Marcum wasn’t a scientist. Just a guy with a dream — and a backyard full of salvaged parts. But when his homemade machine opened a swirling vortex, something strange happened. Objects disappeared ...

These '70s sci-fi movies proved to be unsettlingly accurate when it came to predicting what the future had in store for the ...

Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago.