Timing often is happenstance, but with Earth Day arriving next week, word of high mercury levels in fish in national parks from Alaska to Colorado is particularly sobering. In some cases, the levels exceed limits OKed for human consumption.
A small number of fish released into the Colorado River within Grand Canyon National Park hopefully will turn into tattletales.
Sierra Nevada Bighorn Sheep Again Roaming Great Western Divide In Sequoia, Kings Canyon National Parks
It took the help of a helicopter, but Sierra Nevada bighorn sheep are once again roaming the Great Western Divide that forms part of the border between Kings Canyon and Sequoia national parks.
At Isle Royale National Park, where the island's wolf population has been in slow decay for years, park officials have announced plans to take a thorough look at options for preserving wolves on the landscape.
How healthy is Yellowstone National Park's moose population? That's a question a husband-and-wife team from Vermont hopes to answer over the course of a three-year study into the animals.
The bison management plan that governs how Yellowstone National Park bison are managed when they leave the park could be revised under a proposal Park Service and Montana officials are exploring.
Incubating eggs in the harsh coastal expanses of Kenai Fjords National Park and Preserve in Alaska is tough business to start with, and with predators on the prowl, it becomes even more difficult to rear a brood.
Not too many years ago there was a study that identified the type of vehicles Yosemite National Park's bears liked to break into for a meal. Now a new study says improved efforts to keep bears away from human foods has been a tremendous success in the park.
Three bison were shot and killed inside Yellowstone National Park within the last week, leading park officials Tuesday to ask the public for help in finding the person or persons responsible.
A female wolf that crossed from Isle Royale National Park to Grand Portage National Monument via an ice bridge across Lake Superior was killed by a pellet gun wound, according to veterinarians.