There is little dispute within the scientific community that humans are changing Earth's climate on a decadal to century time-scale. By the end of this century,

During geologic spans of time, Earth's shifting tectonic plates, atmosphere, freezing water, thawing ice, flowing rivers, and evolving life have shaped Earth's

The Chang Tang, the vast, remote Tibetan steppe, is one of the most forbidding places on earth. Yet this harsh land is home to a unique assemblage of large mamm

There is little dispute within the scientific community that humans are changing Earth's climate on a decadal to century time-scale. By the end of this century,