Scientists scanning the seafloor discover a long-lost Stone Age 'megastructure'
The more than half mile long wall, called the Blinkerwall, was likely used by Stone Age hunter-gatherers to herd reindeer toward a shooting blind.
hunter gatherers
That Smells Like ... Um, I Can't Think Of A Word For It!
A new study looks at the way we identify smells. English speakers kind of stink at it. But that's not the case in every language.