Arctic blast causes waterfalls to freeze and windows to crack
The arctic blast that's bringing negative temperatures to several states across the northern U.S. is causing waterfalls to freeze, windows to crack and people to suffer life-threatening frostbite with just 30 minutes of exposure outside.
Forecasters are warning for those who are outside to bundle up with layers to protect against hypothermia and frostbite that could happen with exposure in the bitter arctic.
The icy cold weather has turned the Minnehaha Falls in Minneapolis,
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