Yellowstone National Park has released its annual Wolf Report, which describes the status of wolves in the park and management plans and activities for that species. According to the report, the overall wolf population in the park is up slightly from 2012, similar to previous recent years, and down about 45 percent since 2003.

It very likely will be a bit more costly to enter Yellowstone, Grand Canyon, Yosemite, Acadia, Shenandoah and the other 126 units that charge entrance fees by the time the National Park Service's centennial arrives in 2016, and you also should brace for slightly higher fees to camp, shower, paddle, and participate in boat and cave tours.

Just weeks after a visitor crashed a drone into Yellowstone National Park’s largest hot spring, park officials have filed criminal charges against the alleged pilot, and are stepping up their efforts to publicize and enforce a ban on unmanned aerial vehicles in the park.

William H. Jackson was a photographer on the now famous Hayden Geological Survey of the Yellowstone region in 1871, and his images are often cited as an important factor in the campaign to have the area established as a national park. In 1938, at the age of 94, W. J. Jackson returned to the park for a visit, and an old report about his trip offers some fascinating insights into the Hayden Survey and how times have changes in the world of photography.