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April 24th, 2008

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Imagine a tiny implanted camera that can transfer images to the brain through the optic nerve. The first bionic eyes are already giving sight to the blind.
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What's the Army's policy on overweight recruits? More lenient than you may think, but you can still eat your way out of service.
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25 Ways To Destroy Your Old Printer. If you can't use it, you may as well have some fun with it!
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8 (Pointless) Laws All Comic Book Movies Follow. With millions of dollars on the line, Hollywood isn't about the take any chances.
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Build your own Virtual Volcano and watch it blow! Change your settings to produce different volcanoes and eruptions.
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To make a giant mutant movie monster, you might call in a special effects team, but using a terrapin would be much cheaper. See the result in a clip from the film Monstry.
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How To Change Your Child's DNA. Maternal behavior has some control over which of the child's genes are expressed or repressed.

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Big Questions
What's the Difference Between Vanilla and French Vanilla Ice Cream?
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While you’re browsing the ice cream aisle, you may find yourself wondering, “What’s so French about French vanilla?” The name may sound a little fancier than just plain ol’ “vanilla,” but it has nothing to do with the origin of the vanilla itself. (Vanilla is a tropical plant that grows near the equator.)

The difference comes down to eggs, as The Kitchn explains. You may have already noticed that French vanilla ice cream tends to have a slightly yellow coloring, while plain vanilla ice cream is more white. That’s because the base of French vanilla ice cream has egg yolks added to it.

The eggs give French vanilla ice cream both a smoother consistency and that subtle yellow color. The taste is a little richer and a little more complex than a regular vanilla, which is made with just milk and cream and is sometimes called “Philadelphia-style vanilla” ice cream.

In an interview with NPR’s All Things Considered in 2010—when Baskin-Robbins decided to eliminate French Vanilla from its ice cream lineup—ice cream industry consultant Bruce Tharp noted that French vanilla ice cream may date back to at least colonial times, when Thomas Jefferson and George Washington both used ice cream recipes that included egg yolks.

Jefferson likely acquired his taste for ice cream during the time he spent in France, and served it to his White House guests several times. His family’s ice cream recipe—which calls for six egg yolks per quart of cream—seems to have originated with his French butler.

But everyone already knew to trust the French with their dairy products, right?

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

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science
Belly Flop Physics 101: The Science Behind the Sting
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Belly flops are the least-dignified—yet most painful—way of making a serious splash at the pool. Rarely do they result in serious physical injury, but if you’re wondering why an elegant swan dive feels better for your body than falling stomach-first into the water, you can learn the laws of physics that turn your soft torso a tender pink by watching the SciShow’s video below.

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