It’s a small world, thanks to electronics and air travel. The more contacts people have with one another, the more complex things get. Few
Hydraulic fracturing – fracking – is a technique used with directional drilling that lets us tap deeply buried oil and gas formations. While it’s
. . . and it will reward you with wonders. Popocatépetl volcano in Mexico is currently in an active phase and I am live-blogging that.
Note: A version of this article appeared on Helium, June 15, 2011. Limestone is a calcium-based rock that has many uses in daily life.
In the West, the Latin “geologia” has meant the study of the Earth since about the mid-18th century (before then, it meant earthly matters