We've long used the wheel, but it's no natural development

We’ve long used the wheel, but it’s no natural development

Q. In August, 2013, a young Colorado woman named Kyra encountered a cougar (aka mountain lion) on one of her many hikes. She had cellphone reception but help was more than a half-hour away. How did singing some opera possibly save her life until rescuers arrived? A. Kyra was familiar with the fi