Even in this digital era, sometimes writing with an old-fashioned pencil is preferred to take notes or to write in your journal. But did you know that cedar trees -- some from old-growth forests -- are used to make about 2 billion pencils every year? There is no need to cut down large trees when alternative materials like recycled paper, newspaper and even rubber (from old car tires) are being used to make pencils. They sharpen just like a traditional wood pencil, cost about the same and can be found at any office supply store.

Recycling empty cans, bottles, boxes and paper is one of the easiest and most effective ways to cut down on landfill waste. But did you know that a greasy pizza box is not recyclable with cardboard since the food waste can contaminate a recycling load? If only half the box is greasy, you can tear the clean part away and include it in your recycling; half a box is better than none when you recycle! If you have half-full bottles of water, soda or juice, empty the leftover contents onto the lawn before recycling. The liquids will filter through the soil and safely re-enter the water stream, and the recycling load will weigh less when it's collected.

It's easy to send an e-card to celebrate someone's birthday, and you know it'll get to the recipient, wherever they are in the world. If you're going to send a digital greeting card, why not send one that helps preserve threatened lands? The Nature Conservancy has an e-card program that lets you pick a beautiful scenic card, a personalized message and make a donation to the nonprofit in any amount you want. Your card will give back to important conservation work in a few easy steps. Your donation is tax-deductible, too. Choose from scenic landscapes, wildlife images and more. Learn more at nature.org.