World’s Strangest

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What Exactly Is the Heat Index?

Is it really not the heat, but the humidity? With temperatures spiking around the country, we thought it might be a good time to answer some questions about the heat index. © BRIAN SNYDER/Reuters/Corbis Why does humidity make us feel hotter? To answer that question, we need to talk about getting sweaty. As you probably remember from your [...]

Burning Questions About the Heat Index

Is it really not the heat, but the humidity? With temperatures spiking around the country and weathermen warning of days where the heat index surges into the triple digits, we thought it might be a good time to answer some questions about the heat index. © BRIAN SNYDER/Reuters/Corbis Why does humidity make us feel hotter? To answer that [...]

How Lasers Can Protect You From Pirates

by David DiSalvo In the battle to control the high seas, there’s a new ray of light—the modern laser. In 1918, as the Great War was nearing its end, eccentric genius Nikola Tesla announced that he’d successfully harnessed the power of focused, amplified light. With the new technology, he planned to invent a death ray, capable of [...]