A hiker lost for 24 hours ignored rescuers' phone calls because they didn't recognize the number

Normally, when you don't recognize a caller on your cellphone, it's fine to ignore it. If it's not actually a scammer but something important, they will leave a voice mail. But sometimes it's obvious you should pick up, even from a strange number, like, say, if you've been lost on a hiking trail for hours and night has set in. — Read the rest