"Wait, Does This Go in the Recycling Bin?"

"I wonder about this one when I'm sorting kitchen waste: If you don't know whether something is recyclable, what's the best approach? Is it better to put the inscrutable item in the blue recycling bin, or should you just throw it in the trash?

Although it may seem sacrilegious—since being an ardent recycler is the sine qua non of old-school environmentalism—when in doubt, you should throw it out."