Light Pollution, One Of The Few Global Problems That’s Easy To Solve

Light Pollution

Source: Flickr

Thomas Edison’s first light bulb illuminated New York City in 1879, and humanity rapidly connected the dots between towns and cities with streetlights, illuminated billboards, and economic growth. Lights paved the way for bigger business, more usable time and entertainment late into the night. They also made us safer. Criminal elements often use darkness as a means to strike and disappear, so the emergence of lighted pathways and street corners has also had a deterrent effect on crime.

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A Brief History Of The World’s Oldest Disease

Leprosy History Old Woman

A portrait of an elderly blind woman at the Nuang Kan Leper Colony in Kengtung, Myanmar. Source: DVB

A plague to rule them all, leprosy is very likely the oldest infectious disease in human history. Written accounts of the disease — sometimes referred to as Hansen’s Disease—date as far back as 600 B.C., and the genetic evidence alone supports the existence of Leprosy infections in 100,000 year-old remains.

While many other human diseases have been around as long as human beings have–such as nutritional night blindness, tuberculosis and of course sexually transmitted infections (syphilis)–Leprosy’s social history is the one that is most inextricably linked with human evolution.
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Animal Facts: Love And Sex In The Animal Kingdom

You know the Valentine’s Day drill: buy some chocolate and flowers, make reservations at a nice restaurant and exchange “I love you’s” over dessert. But how does the rest of the world—specifically the animals of the world—celebrate Valentine’s Day? Well, it’s complicated.

In the animal kingdom, love and sex are just as complex and mysterious as they are for humans. Some animals enter into long-term relationships (and short-term flings!), others engage in silly mating rituals, and a few have evolved to wield some incredibly bizarre sexual organs. Check out these 21 animal facts about love, sex, relationships, and reproduction:

1. Albatrosses are known for being flirtatious. Check out their hilarious mating dance:

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