If just 1 inch of rain fell over an area of 5,000 acres, the amount of water would be enough to fill almost 3-and-a-half million 40-gallon bathtubs! Imagine all the bubble baths! But what would happen if all this rainwater gathered in one gigantic raindrop and fell to the earth?  So, it's a stifling day in the middle of July, and you're staying outside, trying to catch a breath of fresh air. Suddenly, you spot a dark cloud growing on the horizon. "Finally," you think. "I wouldn’t mind a cool shower!" But then, as the cloud is coming closer, you notice that it doesn’t look like a regular cloud. For one, it's too big. And secondly, it's narrower at the bottom and spreads wider at the top...

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