Spots of light glinted off the faceted sides of more than a dozen calcite crystals stuck inside a small cave at the top of a steep, rocky couloir. Tom Benedict balanced on a thin log spread across the ...

AFTER the obituary notices of eminent Fellows lost during the past year, who were more than usually numerous, the president confined his own special address to the consideration of the structure and ...

Limestone Pavements are bare limestone rock surfaces composed of slabs of rock (clints), separated by variable-width vertical cracks (grikes) . These grikes have developed by weathering and enhanced ...

The idea of geoengineering a solution to climate change has been discussed for decades, and now a new study proposes a plan that would cool the planet while repairing a hole in the ozone layer at the ...

The Great Transformation The Dolomites are about 250 millions years old and are composed mainly of sedimentary rocks and ...

A cave or caves with a complex network made up of interconnected chambers and passages that make up an underground drainage system CAVE A natural opening in the rock which is large enough to be ...

The Great Pyramid of Giza is the only wonder of the ancient world that has survived to the present day. The tomb is attributed to Khufu or Cheops, pharaoh in ancient Egypt from 2,620 to 2,580 B.C.