There are many different principles on which to draw in moral reasoning about specific environmental problems. This lesson reviews three basic pairs of principles: justice and sustainability; ...

This postdoctoral researcher studies turbulence to design adaptive surfaces that improve energy efficiency.

Global healthcare spending is $9.8 trillion annually, with the U.S. accounting for about $4.9 trillion. Investors can consider drug, medical device, payer, and healthcare provider stocks. Focus on ...