Canada’s tar sands, deposits of sand saturated with bitumen, contain twice the amount of carbon dioxide emitted by global oil use in our entire history. If we were to fully exploit this new oil source, and continue to burn our conventional oil, gas and coal supplies, concentrations of carbon dioxide in the atmosphere eventually would reach levels higher than in the Pliocene era, more than 2.5 million years ago, when sea level was at least 50 feet higher than it is now. That level of heat-trapping gases would assure that the disintegration of the ice sheets would accelerate out of control. Sea levels would rise and destroy coastal cities. Global temperatures would become intolerable. Twenty to 50 percent of the planet’s species would be driven to extinction. Civilization would be at risk.

Journalists like to think of themselves as responding to a calling, or duty. For some journalists, there are stories that are worth taking a calculated risk to obtain—pieces that establish responsibility for organized rapes or massacres, for example, or reports that implicate powerful figures in corruption or organized crime. These are stories that would otherwise not be told.

Every high-risk decision brings both the potential of lasting, positive impact, and the possibility of permanent, tragic loss. Decisions about risk are highly personal, but the individual should be keenly self-aware. Your emotions come into play, as does adrenaline. A good story with an element of danger can bring with it a rush as compelling as sex or drugs.

In such a moment, you might be wise to ask yourself: Am I being driven by the emotions of the moment? »