Unplugging our electronics is one of the simplest ways to conserve energy and ultimately benefit the planet. So why is it so hard to pull the plug?

Danny Seo explains why some appliances are more energy efficient than others.

Figuring out what to get friends and family can be a challenge, and the closer it gets to Christmas Eve, the greater the likelihood you’ll make panicked purchases that leave the giver and giftee in agreement on one thing: oh, you shouldn’t have.

But there is one thing that none of us seems to have enough of, and that’s time (well, technically, there are two things most of us feel we don’t have enough of; the other is money, which, of course, makes a great gift, too.)