The March of Dimes has taken what began in Ohio and a few other select states and extended it nationwide in a campaign it's calling "Healthy Babies are Worth the Wait."
What began as a collection of text works, paintings and cartoon imagery has made way for real-life smoking trucks and skips, waxwork models and even a replica public toilet.
"At least in the case of the woolly rhino, it actually adapted itself in the cold environment in the Tibetan Plateau before the Ice Age has even started," Wang says.
Scientists say they have reconstructed around half of the genome of the woolly mammoth, a species that became extinct at the end of the last Ice Age some 11,000 years ago.