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

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,

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,