Four More DNA Bases?

As technology allows us to delve ever deeper into the inner workings of the cell, we continue to find layer-upon-layer of complexity. DNA, in particular, is an incredibly complex information-bearing molecule that bears the hallmarks of design.

How Butterfly Wings Display Brilliant Colors

Ever wonder how butterflies flash brilliant colors from their wings? It’s not done with pigment. Instead, butterflies use a trick of light that sounds like something out of Star Trek: “photonic crystals.”