Docent-led events teach hikers about local ecology, animals and artwork while providing exclusive after-hours access.

The same light scattering that makes our daytime sky blue intensifies during smoke events, as larger particles allow the dramatic reds and oranges to dominate dawn and dusk.

Some scientists believe humans became bipedal to adapt to climate change, but our closest primate ancestors complicate that ...

Summer heat may have you seeking comfort from a nearby shade tree. You immediately experience as much as a 15 to 20 degree ...