That’s because the machines used to produce virgin paper are often powered by timber detritus—the parts of the trees that weren’t deemed fit for pulping and can be burned to generate energy.

Don't Burn The Gift Wrap Every Christmas, fire departments across the country warn people not to burn wrapping paper in the fireplace. Still, people do it.

The New Fairfield Volunteer Fire Department is reminding residents that they shouldn’t burn wrapping paper in their fireplaces. Hearst Connecticut Media file photo.

Author Ray Bradbury died on Tuesday. He named his most famous book, Fahrenheit 451, after “the temperature at which book-paper catches fire, and burns.” Does paper really burn at 451 degrees ...