Long, carefully documented interactions between a diverse assemblage of plants and pollinators in the region of Pikes Peak, CO, USA ... How has the abundance and richness of flower visitors changed ...

U.S. News Insider Tip: Don't miss the high-altitude, secret recipe doughnuts at the Pikes Peak Summit Visitor Center. An automated machine churns out thousands of the sweet treats daily.

Timed entry permits are required for visitors wanting to drive their car on the Pikes Peak Highway from May 23 through Sept.