Quality Imprinted, Science, Astronomy, and Science Humor T-Shirts Since 1981
Glow-in-the-dark radioactive elements make this colorful and accurate t-shirt fun and informative.
Glow-in-the-dark radioactive elements make this colorful and accurate shirt fun and informative.
Formula for Caffeine, a tribute to that bitter liquid that gets us moving in the morning, and keeps us plodding along in the afternoon.
Actual x-ray diffraction photographs revealing the helix structure of a DNA molecule.
Portrays the steps from nucleus, to chromosomes, to individual strands of DNA, to base pairs studied by the Human Genome Project.
Structure of theobromine, the chemical in chocolate that makes the nectar of the gods so soothing and enjoyable to us mere mortals.
Ionic attraction at its best.