45% of Americans are unaware that the sun is a star.

45% of Americans are unaware that the sun is a star. Only 55% of all Americans know that the sun is a star.

In Japan they have square watermelons.

They get square watermelons by growing them inside of square glass cases. That way they can fit easily into an overcrowded refrigerator, and you can stack things on them. Square watermelons are expensive though (10,000 yen or about $82). Compare that to regular round watermelons which cost about $15-20 in Japan. The square boxes they're grown in are the exact dimensions of Japanese refrigerators, which means they fit perfectly. At $82 each, these square watermelons probably wouldn't be too popular in the United States. Our solution for a lack of refrigerator space? Smaller, seedless watermelons.

Grapes EXPLODE when you put them in the microwave!

You may have heard of frozen grapes as a tasty snack, but what about heating grapes in the microwave? You probably shouldn't try this one. It turns out that grapes react very oddly when they're microwaved. Since grapes are full of moisture, when they are microwaved, that moisture turns to steam. If the stem is still attached to the grape and there is nowhere for the steam to escape, it will explode slightly and rupture the skin. If you place two grapes close together with their stem holes facing each other, some arcing and sparking will occur. If there is just a single grape with its stem hole open, it will let out a stream of steam. Good thing we don't serve grapes warm.

The total weight of all the ants on Earth is about the same as the weight of all the humans on earth.

Unless you leave food out and attract them, humans rarely have a need to think about ants. They're tiny, not poisonous and not particularly terrifying, like say, spiders. However, they far outnumber humans on earth--by one million to one! Funnily enough, they are also roughly a millionth of a human in size too. Do the math--the total weight of all the ants on earth matches the total weight of the entire human population. There are 10,000 different types of ants and they've been around for a long time. Ancients ants have been discovered in fossilized sap from 100 million years ago! Over time, ants have changed very little. Their way of life and survival is successful. Some scientists attribute this to their unselfish ways. Ants live in colonies and bring their prey back to their many relatives to share.

Jellyfish evaporate in the sun. They're 98% water!

When jellyfish are in the water, they can be a bit intimidating. Their tentacles can pack a painful electrical shock. However, once they wash up on shore, they are anything but intimidating. It turns out that jellyfish are 98% water. Most are transparent and bell-shaped. If they end up on the beach, they will most likely evaporate in a few hours and mostly disappear. Jellyfish also don’t have brains, bones or a heart. They do have rudimentary sensory nerves though.