Most of the signs you think are neon are actually made with other gases.

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7. Kit Harington is extremely claustrophobic, which posed an issue while shooting an iconic 'Game of Thrones' scene.
Globetrotters, take note.
Norilsk is among Russia's coldest, richest, and most polluted places—and 175,000 people call it home.
Think a post-job interview thank you note has gone the way of calling cards and phone books? Think again.
Radiation in everyday objects was once surprisingly common.
To call Clara Barton just a nurse insults her legacy, despite what your history teacher might have taught you.
From the discoverer of titanium to a prehistoric plant expert, these Christmas-born scientists helped us better understand the natural world.
Descriptions of Grýla vary from tale to tale, but in all of them, she's bloodthirsty and fearsome.
Only 10 percent of people can solve these in under 30 seconds, according to Solar Centre.
Eggnog: you know it's delicious, but did you know it once led to a riot at West Point? Let's all raise our glasses to one of the most popular beverages of the holiday season ...
From 'Rudolph the Red-Nosed Reindeer' to 'Home Alone,' here are some bizarre fan theories about the holiday movies you only thought you knew.