Finding the right gift for the rock hound, dinosaur enthusiast or space nut in your life can be a challenge, as can figuring out how to show the world that you love this blue marble. But EARTH magazine is here to help! For the first time ever, EARTH T-shirts are now available through the AGI Bookstore!!! Show your love of EARTH with a unique EARTH T-shirt, with an original design by geologist and artist Callan Bentley. The EARTH T-shirt is a high-grade, durable 100% cotton tee and is for sale at just $10.00 — one style in a range of sizes.