Once upon a time, you wished for superpowers to make a big impact on the world. Unfortunately, X-ray vision and telekinesis never came to visit.

But you can make a difference with your mere mortal skills by entering Azalea Boutique’s T-shirt design contest to raise awareness of global warming and climate change.

Submit up to three designs about the state of the earth or the consequences we may face if we don’t get our act together. (You didn’t just throw that plastic bottle in the trash, did you?) Mail in or drop off your submissions by April 1.

The five winning designs will be launched and celebrated, then sold online and in the store. Proceeds will go to the winner’s environmental org of choice.

Now that sounds pretty super.

Available at Azalea Boutique, 411 Hayes Street, at Gough Street (415-861-9888). For contest details, go to azaleasf.com.