Then little furry warm-blooded mammals took faces one step better, freeing them up and making them mobile. For the first time in evolutionary history, animals could wink, grin and leer. Real facial liberation came with the primates, as during courtship lips compress, brows lower, ears flatten, eyes widen, teeth bare and tongues show. The zenith is the human face, seductive as a neon sign in Las Vegas. We've come a long way from the fishes.
Numbers too can form palindromes, as in an amusing old party trick.
The sum 969 is also a palindrome. This seems to be one exception. A. Hundreds of millions of sperm are deposited at a time in the human female, says Susan S. Suarez, associate professor of anatomy at Cornell University. First, they are tiny and have a long arduous journey to the egg. They must pass through the cervix and the uterus, then reach and swim through a valve-like entrance into the fallopian tubes.