Some 45,500 years ago, on the Indonesian island of Sulawesi, ancient humans ventured into a cave and sketched out the rotund form of a native pig, complete with a bristly back and face warts.

If you'd rather not be tethered by a power cord while cleaning, the best cordless vacuums deliver top-tier suction power and cord-free convenience. Cordless stick vacuums are also lightweight and easy ...