› added 12 years ago

191

TIL junk mail companies are charged more money if you send their mail back.

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E1vPo TIL that despite containing mercury, compact fluorescent light globes emit less mercury into the environment than incandescent light globes which contain no mercury due to their lower electricity consumption
0wmlj TIL that feeling sick is part of the body's attempts to preserve energy for the immune system and make you act in a way that signals to nearby people that you need help
rNWvM TIL that in the US, small business owners are incentivised to buy large, heavy cars rather than small, efficient ones.
6rZQ TIL in 2013 some people posing as cops and robbing citizens in Detroit turned out to be cops going around robbing citizens in Detroit.
b6Ova TIL that William and Ellen Craft, two people enslaved in the American South, fled to the North in the 1840s, with Ellen (who was more light-skinned than William) posing as William's male master. They escaped to the U.K., where they raised five children, and eventually moved back to the U.S. in 1868.