THE KNOWLEDGE FEED

Stephanie Kwolik's name might not ring a bell, but she's responsible for saving thousands of lives. In 1965, she invented Kevlar, the material used in bulletproof vests.

Stephanie Kwolik's name might not ring a bell, but she's responsible for saving thousands of lives. In 1965, she invented Kevlar, the material used in bulletproof vests.

5 Questions: Hey Arnold!

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5 Questions: KICK THE BUCKET

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5 Questions: Earth Day

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Pigs are no longer commonly employed to rustle up truffles; specially-trained dogs (who are equally adept at the job) have now taken their place.

Pigs are no longer commonly employed to rustle up truffles; specially-trained dogs (who are equally adept at the job) have now taken their place.

The M.C. in M.C. Escher stands for Maurits Cornelis.

The M.C. in M.C. Escher stands for Maurits Cornelis.

5 Questions: HOLD THAT TIGER

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The genetic mutation that causes red hair also causes redheads to be more resistant to anesthesia. They can require up to 25% more than patients of other hair colors.

The genetic mutation that causes red hair also causes redheads to be more resistant to anesthesia. They can require up to 25% more than patients of other hair colors.

Only one U.S. coin — the zinc-coated steel penny produced during World War II — can be picked up by a magnet.

Only one U.S. coin — the zinc-coated steel penny produced during World War II — can be picked up by a magnet.

5 Questions: Spoiler Alert!

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5 Questions: FEET FIRST

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The phrase "Mr. Mojo Risin'," repeated by Jim Morrison in the Doors' song "L.A. Woman," is an anagram of the vocalist's name.

The phrase "Mr. Mojo Risin'," repeated by Jim Morrison in the Doors' song "L.A. Woman," is an anagram of the vocalist's name.

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