Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...
It is one of the oldest mysteries in science. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Octopuses might be nature's ultimate weirdos: They ...
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