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In the past, other names now associated with the same symptoms include "soldier's heart," "shell shock" and "thousand-yard stare."

At its heart, Shell will become primarily a business that extracts, liquefies and transports natural gas used mainly for heat and electricity, rather than pump oil for the transportation industry.

The psychic toll of war has been variously described as nostalgia, soldier’s heart, shell shock, war neuroses or simply exhaustion, and there have always been skeptics.

This heart shell had to be cracked apart with forceps.