"This man, Gay Jewel, was declared the "world's heaviest man" in 1899:"

"This is what the end of 13,000 miles of the Great Wall of China looks like:"

"This adorable little thing is a hummingbird's feather:"

"This is what an elephant's tail looks like close up:"

"And this is what one of those tail hairs looks like up close:"

"Pilots get special cups on airplanes:"

"This is what a completely empty CVS store looks like:"

"This is what the Mayan temple at Chichen Itza looked like before it was restored:"

"And this is what it looks like today:"

"Have you ever looked closely at the backs of a cat's legs? There are whiskers there called carpal whiskers:"

"A fire alarm is...just a switch!"

"Black paper towels exist:"

"This is what a 30-year-old cat looks like:"

"Lemons float, limes sink. LEMONS FLOAT, LIMES SINK!"

"See that little hole there? This is what Mount Vesuvius looks like from space:"

"This enormous disk is what 10 MB of data looked like in the 1960s:"

"This is a piece of uranium glassware, a special kind of glass that glows under a blacklight because of the uranium added when the glass was being made:"

"A normal-size piece of paper looks incredibly tiny when held by Shaq:"

"Just last week the world population surpassed 8 billion humans. 8 BILLION!"

"This, wicker chairs and all, is what the interior of a plane looked like in 1925:"

"This absolute unit is the largest bird to have ever existed, Argentavis magnificens:" "It had a 22-foot wingspan and weighed over 150 pounds."

"And, just for good measure, this is the world's smallest bird, the bee hummingbird:"

"This is Margaret Gorman, the woman who won the very first Miss America competition in 1921:Closeup of Margaret Gorman"

"They sell red solo cups as "American party cups" in New Zealand:"

"UPS drivers have special UPS socks as part of their uniform:"

"This is the world's oldest surviving photograph, taken by Nicéphore Niépce in 1827:" "It's called "View from the Window at Le Gras." It's, well, a view from a window."

"Here's what the original, un-enhanced world's oldest picture looks like today:"

"Every single letter in the alphabet appears in a least one US state...except for the letter Q:"

"Baby zebras are born with brown stripes before they eventually turn black:"

"This is a screenshot of the Silk Road, the infamous black market on the dark web, before it was taken down:"

"This is what the Eiffel Tower looked like as it was being built:"

"This is a picture from Abraham Lincoln's second inauguration in 1865. Can you spot him?"

"Speaking of Lincoln, this man, Valentine Tapley, vowed in 1860 to never cut his beard again if Abraham Lincoln was elected president. Here's him in 1896:" "He won 5th place at a World's Longest Beard competition that year."

"And, again, just for good measure, here's Hans N. Langseth, winner of the world's longest beard competition in 1922:"

"And, lastly, uh, apparently, some people can do this:"