The world's coal supply suggests reserves may be vastly overestimated and we could be facing an unprecedented global energy crisis, according to a U. S. expert.

美国科学家提出，世界可用煤炭储量被大大高估了。人类很可能正面临一场前所未有的能源危机。

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So energy expert Eric Potter says it is too early to know how the new gas shale reserves will affect the market.

VOA: special.2009.10.23

But Callum Roberts, an expert on marine reserves at the University of York, in Britain, points out that once a species is gone completely, it may take a long time to return.

ECONOMIST: Marine conservation

Dorner also had served in the Naval Reserves, earning a rifle marksman ribbon and pistol expert medal.

NPR: Massive Manhunt On For Ex-Cop Accused Of Killing 3

The Training Program included lessons, discussions, dialogues and interactive exercises of expert-trainers regarding the role and place of museum-reserves in the system of preservation and use of cultural and natural heritage of CIS countries.

UNESCO: OFFICE IN MOSCOW