Dolphins often display a playful attitude which makes them popular in human culture. They can be seen jumping out of the water, riding waves, play fighting and occasionally interacting with humans swimming in the water.

In 1391, China began producing toliet paper for use by its Emperors.

The expression cooked "al dente" means "to the tooth." What this means is that the pasta should be somewhat firm, and offer some resistance to the tooth, but should also be tender.

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