The combination of those key factors Revis's uncertain health, his asking price for a new deal and the Jets' need to rebuild made trading him inevitable.

WSJ: Darrelle Revis, Tampa Bay Buccaneers, New York Jets: Jets Trade Revis to Buccaneers

The problem with the study, Diet Soft Drink Consumption is Associated with an Increased Risk of Vascular Events in the Northern Manhattan Study ( Gardner et al., Journal of General Internal Medicine) is that the numbers are low enough to leave us uncertain as to whether diet drinks were the cause or simply correlated with other factors that led to these events.

FORBES: Will Drinking Diet Soda Increase Your Risk For A Heart Attack?

Since oil prices and other factors are uncertain, in other words, the mere option to produce has value.

ECONOMIST: Economics focus

But because so many factors affect them, it's uncertain what role if any the algae has played.

WSJ: Report predicts ever-bigger Lake Erie algae blooms