We had some pretty serious thunderstorms here last night. Serious enough that I thought it might be hailing outside. And, as luck would have it, Slate just published this great article on the dangers of giant hailstones. Apparently, they're not so dangerous after all.
While the article was interesting, I liked the extra added "bonus explainer" section best. That part explained the varying sizes of hailstones, and FYI, "softball sized" is only 4.5 inches in diameter.