Baby woolly mammoth Lyuba looks great for her age!

Is 40,000 the new 20,000?

The well-preserved remains of Lyuba, a baby mammoth about 40,000 years old, is helping scientists explain the mysteries of the Ice Age.

Lyuba, who was discovered in 2007 in the Russian Arctic, was about 1 month old when she died, probably in a mudslide, according to National Geographic's "Waking the Baby Mammoth," which airs at 9 p.m. Sunday.

Luckily for us, the clay-like goo also "pickled" her, preserving baby in a nearly pristine state. They've even  found milk from her mother in her stomach. Previously discovered mammoth remains appeared to be starving. Lyuba was in perfect health.

By examining Lyuba's teeth, researchers hope to find out what caused Ice Age mammals, including the mammoths, to vanish about 10,000 years ago. They hope to determine if climate or hunting were the causes of extinction.

At least we know it wasn't plastic water bottles.