Tree and plant cover has deteriorated considerably in some areas, while advancing in other areas that previously burned or used to be frozen.
Published Jul 27, 2020
A new study has found a link between the effects of climate change, the productivity of grasslands, and the proliferation of bison in Yellowstone National Park.
Published Mar 12, 2020
Climate change could lead to a net loss of plant life in some regions, and also could change the ratio of species that grow in them.
Published Oct 17, 2019
Climate change is already affecting the American people in far-reaching ways, says a new climate report.
Published May 8, 2014
Precession—the change in orientation of the Earth's rotational axis—alters the orientation of the Earth with respect to perihelion and aphelion.
Published Mar 24, 2000
The timing of seasons in North America is changing.
Published Apr 19, 2012
In National Parks across the United States, recent springs are among the earliest ever observed compared to the past 112 years.
Published Apr 6, 2018
Rising temperatures have brought a longer growing season in the high latitudes. Once-treeless tundra ecosystems have greened the most, while boreal forests had a more mixed response.
Published Mar 14, 2013
