Then, having observed Katia, he slid forward like a snake because he did not want to step on a sharp rock or a pine cone.

NPR: Excerpt: 'Lost in Uttar Pradesh'

Ascending a free hanging rope that twists in the breeze and juts over an edge (how sharp is that rock?) is one of the scariest things a climber can do.

WSJ: Training for the Big Wall | By Michael J. Ybarra

Other firms that supply Eden include Sharp's Brewery at Rock, Cornish Orchards at Liskeard and bulb supplier Fentogallon near Truro.

BBC: How much is the Eden Project worth to the economy?

Curiosity still has plans to travel to Mount Sharp, where it will slowly climb a mountain analyzing the sedimentary rock to explore its geological history.

CNN: NASA: Yes, Mars could have hosted life

The rescue of Northern Rock and the subsequent banking crisis brought the safety of savings into sharp focus.

BBC: How to cope with financial difficulties

This is a very fast camera in every respect (bar an occasional lag writing RAW files to memory) with a tack-sharp, super-fast lens, pleasingly fast autofocus, a great, bright screen, and rock-solid feeling controls that are right where your fingers need them to be.

FORBES: The Electric Barnack Acid Test: Shooting On The Street With The Leica D-Lux 6

Despite the sharp fall in natural gas prices in the U.S. caused by rising production from shale and other unconventional rock formations there was a time when early investors in shale gas made fat profits, a process which is being mirrored in Australia.

FORBES: Chevron Gets A Sniff Of Australian Shale Gas