Meteorologist Mitchel Coombs has explained the factors leading to the development of numerous precipitation types, like rain ...

Last summer, we here at Slate reported on a candy sensation that was sweeping—or, I guess more accurately, bumpily ...

PeopleImages.com / Getty Images Form W-9, Request for Taxpayer Identification Number (TIN) and Certification, is an Internal Revenue Service (IRS) tax form that businesses use to collect ...