The boundary is so important because it is a precise marker in geologic time,

We're looking here at a whole suite of leaves that are previously undiscovered and undescribed, ... We've found a couple kinds of conifers and a couple of ferns and broadleafs. But exactly what they are, we don't know.

built into the labor market.

[The census] makes the difference look very stark, when in reality it should be much closer together, ... There is more economic opportunity in this country.

You've got 500 million years of history exposed here at Pulpit Rock, Garden of the Gods and in Manitou Springs,

We are trying to build the geology of the Rocky Mountains as of 65 million years ago, ... We are trying to understand how the landscape changed and reconstruct the Rocky Mountains.