An overview of paleontology of the Upper Ordovician Platteville Formation.

An overview of paleontology of the Ordovician in the Cincinnatian.

An overview of paleontology of the Cretaceous period in Kansas.

An explication of the geological history of North America.

An examination of quantum theory and the question of whether it is complete.

A tale of how two poets—one who drafted, one who crafted—came together to create a Modern masterwork.

An Italian particle physicist tells the story of how everything began.

How the geology of the planet shaped the history of humanity.

Four billion years in 8 chapters!!!!

Tiny measures have big impacts.

The Light Ages is history set to the tune of a detective novel.

The Cambrian Period, stretching from roughly 538 million years ago (Ma) to approximately 485 Ma when the Ordovician Period began, was a time of tremendous change for both the planet and the life upon it.

Otherlands provides a sampling of 16 environments that have existed at various points during the Earth’s 4.6-billion-year history.