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A high-speed test of your reflexes. Click the second the screen changes. Don't blink, or you've already lost.
★A day on Jupiter lasts only about 10 hours.★A jiffy is an actual unit of time: 1/100th of a second.★We have mapped more of Mars than of our own ocean floor.★Voice actors for Mickey and Minnie Mouse got married in real life.★So far, two diseases have successfully been eradicated: smallpox and rinderpest.★A newborn panda is smaller than a mouse.★A day on Venus is longer than a year on Venus.★A group of frogs is called an army.★A group of jellyfish is called a smack.★A group of porcupines is called a prickle.★Banging your head against a wall for one hour burns 150 calories.★Cows have regional accents, they moo differently in different areas.★The dot over the letter 'i' is called a tittle.★The smell of rain has a name: petrichor.★Polar bears have black skin under their white fur.★Sloths only poop about once a week.★A cloud can weigh more than a million pounds.★Peanuts aren't nuts, they are legumes.★The human brain uses about 20% of the body's total energy.★The fear of long words is ironically called hippopotomonstrosesquippedaliophobia.
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