Mower blades themselves aren't threaded, but rather the fastener that holds the blade in place can be either right or left-threaded. Right-hand threaded fasteners tighten clockwise and loosen ...

When Srikamakshi Kothandaraman began her training as a surgeon in Chennai, India, a decade ago, she ran into a surprising obstacle: hospital equipment. Bolted-down lamps and ill-placed mirrors made it ...

Ever wondered why most people favour their right hand, while a smaller group prefers the left? Handedness isn’t just a random choice, it’s a fascinating mix of brain structure, genetics, and early ...