2. The Earth spins at 1,000 mph but it travels through space at an
incredible 67,000 mph.
3. Female black widow spiders eat their males after mating.
4. DNA was first discovered in 1869 by Swiss Friedrich Mieschler.
5. The Ebola virus kills 4 out of every 5 humans it infects.
6. There are 60,000 miles of blood vessels in the human body.
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