Ponder the red-backed poison frog. In nature, red can issue a warning to predators — stay away, the aposematic message reads. On the road, red can be a warning of its own, often flashing on emergency ...
Q: A while back while traveling on Interstate 90 out of Wisconsin, a red truck with flashing strobe lights came up behind us. The lights were in the grill, not on the roof and I don’t recall the color ...
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