Methane is the principal component of natural gas, and massive amounts of it are trapped in reservoirs beneath the sea floor and under a layer of the ice-like substance.

FORBES

In a section on water in outer space we learn that there is a lake-size layer of ice on the moon's south pole, that Mars once had rivers, that there is steam in the sun's atmosphere.

FORBES: The Story Of Eau

For dessert, try coconut invasion (coconut layer cake, mango ice cream and warm chocolate sauce).l La Ripaille--605 Hudson St.

FORBES: Fact and Comment

This autonomous, solar-powered robot carries a ground-penetrating radar to study how snow accumulates, adding layer upon layer to the ice sheet over time.

ENGADGET: NASA's GROVER eco-rover to examine Greenland's ice sheet (video)

It is a cracked and crumpled layer-cake of rocks, 480 million years in the making, a landscape sculpted by ice then transformed by man and a witness to the birth of the Industrial Revolution.

UNESCO: Global Geoparks