On its own, Earth would shift toward another ice age in about 10,000 years, scientists say. But humanity’s greenhouse gas emissions may have radically shifted the climates trajectory. (Santa Barbara, ...

Earth’s path around the Sun is not a fixed racetrack but a slowly shifting orbit, and those subtle changes have a long history of reshaping the planet’s climate. As astronomers refine how these ...

Sulfur is a critical component of Earth’s surface evolution owing to its dynamic roles as a redox buffer and nutrient as well as forming the basis for some of Earth’s earliest metabolisms. In this ...

Our planet has experienced dramatic climate shifts throughout its history, oscillating between freezing "icehouse" periods and warm "greenhouse" states. Scientists have long linked these climate ...

Climate change deniers inaccurately claim that Earth's rapidly rising temperatures are the mere product of natural cycles. Scientific experts have long explained that, although Earth does experience ...

Seasonality shapes much of life on Earth. Most species, including humans, have synchronized their own rhythms with those of the Earth's seasons. Plant growth cycles, the migration of billions of ...

Our planet has experienced dramatic climate shifts throughout its history, oscillating between freezing “icehouse” periods and warm “greenhouse” states. Scientists have long linked these climate ...