Expenses a company has when it drills for oil or natural gas. Intangible drilling costs are sometimes convenient for a company's tax purposes because it can deduct intangible drilling costs in one year when the company perhaps found little or no oil from profits made in a different year when the company does find oil.
Bruce Lanphear, a professor at Simon Fraser University and also an expert in lead toxicity, said Edwards not only studies the impact of lead in water, but he makes his testing available to communities in need, like he did in Flint.
Anger over high levels of lead in the water in Flint has led the mayor to declare a state of emergency. Jan. 25, 2016 Flint resident Angela Hickmon, 56, chants during a protest outside City Hall in downtown Flint.