› added 7 years ago

117

TIL About half of the US Presidents have been bilinguals or polyglots.

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N7obQ TIL Scientists track solar cycles by counting sunspots. A high-powered telescope might show 10 or 20 and a powerful observatory may see 50 to 100, so there is a formula for the official sunspot number, R=k (10g+s)
ZgMG TIL That in most Southern States the Coroner is the only person that can arrest the Sheriff
OGQ77 TIL Germany is the only country where you can't "travel through time" and look at old "Street Views" because of strict privacy regulations.
PYGvw TIL that the superb fairywren is a socially monogamous but sexually promiscuous bird. Couples stick together, but each member mates with other fairywrens. Coupled birds later help each other to raise the resulting "illegitimate" offspring.
VMrk0 TIL that it takes only 8-minutes for sunlight to reach the Earth, but can take up to 170,000 years for it to travel from the Sun's core to its surface. This is because the photons travel in a nonlinear path known as a random walk process - looks pretty similar to a convoluted zig zag.