Humdinger means something or someone very remarkable or admirable. However, it was adopted in mid-1940 by American airmen to mean fast aircraft or vehicle or a smooth-running engine
Solar Cycle 25's activity has surged, producing more frequent sunspots and solar flares than expected. This could intensify space weather, affecting satellites, power grids, and creating more auroras.
Earth’s magnetic poles flip roughly every 200k to 300k years, but the last reversal was about 780k years ago. Some scientists think we’re overdue, but the timing is unpredictable and could take thousands of years. A flip might disrupt technology and
Sweat is like a fingerprint. Its composition is a combination of compounds that is uniquely yours. So while everyone sweats, no two people sweat the same.
Benjamin Franklin is credited with the actual invention of the rocking chair in 1710, although other sources claim it was invented by farmers or by early cabinetmakers.
