Baby bears are born in the winter and stay inside their dens until spring. Every time a cub finishes nursing, the mom licks its bottom to make it urinate. The mother bear then drinks the urine, which helps keep the den clean.

In ancient Rome, lead poisoning was a prevalent disease amongst the wealthy because of their extensive use of lead. Many Roman women died because of lead poisoning caused by the use of make-up that contained lead.

In China, pancakes are generally served as side dishes. They are stuffed with meat, bean sprouts, and other vegetables.

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