Snowball Earth, Even In The Tropics

Snowball Earth, Even In The Tropics

New details of a nightmare period on Earth with surface conditions as frigid as present-day central Antarctica at the equator have been revealed thanks to the publication of a study of ancient…
The Mystery Of The Canyon With Two Mouths

The Mystery Of The Canyon With Two Mouths

One canyon on Earth has two mouths - but that is not the only mystery. First formally documented by western explorers mapping the Colorado Territory in the 1800s, Unaweep Canyon is a puzzling…
The Copper Heart Of Volcanoes

The Copper Heart Of Volcanoes

The link between volcanism and the formation of copper ore could lead to discovery of new copper deposits. Copper has been in use for 6,000 years and it shows no signs of slowing down. The…
Acid Rain Of 250,000,000 B.C.

Acid Rain Of 250,000,000 B.C.

The Permian was a geologic period that ended more than 250 million years ago. The Earth consisted of one forested super-continent called Pangea and a large ocean called Panthalassa teemed with life…