Amazon has the self-emptying Shark Matrix Plus robot vacuum & mop on sale for $350 off
Fortunately, Amazon has a limited-time deal on the Shark Matrix Plus 2-in-1 Robot Vacuum & Mop with Sonic Mopping, which knocks your price down from $750 to $400, for a total of $350 in savings. Prime ...
Bullet-fast moon rocks carved 2 lunar gorges deeper than the Grand Canyon
The lunar canyons Vallis Schrödinger and Vallis Planck are extraordinarily deep, and scientists now know the valleys were ...