Giant camels used to roam what’s now Los Angeles. If you visit the city’s La Brea asphalt seeps, you can see their bones, ...

The natural history of continents -- The Canadian shield and its ancient rocks -- The interior lowlands, and the science of gently-dipping strata -- Appalachian and related systems; Paleozoic ...

A study published in the journal Nature Geoscience has revealed a subtle yet significant phenomenon beneath the North American continent; its ancient bedrock is slowly dripping into the Earth’s mantle ...