And if that wasn't enough, we've also created a new science-themed design. It features a picture of Charles Darwin and the phrase "Natural selection made me what I am today". Looks great on t-shirts and mugs. It's just in time for holiday gift-giving. So if you have a biologist or science-lover on your list, be sure to get them one.

This design and more are available at our Zazzle-powered sister store, Rising Tide Tees. Shop early!