World’s Strangest

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Why Airline Food is So Salty

That’s a scanning electron micrograph of dissolved salt by Signe Emma, who used it to illustrate the reason airline food (remember that? You’d have to travel abroad to eat airline meals nowadays) is so salty: At 30.000 feet the cabin humidity drops [...]

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 [...]