If you think X-rays and other forms of radiation have a monopoly on penetrating opaque objects, visible light begs to differ. It actually can pass through things like paint and human tissue, which has powerful implications for medical research and other fields. Regular lightwaves could one day replace X-rays or even allow scientists to remove tumors with lasers instead of risky surgery. The problem is, such light is either absorbed or scattered once it passes through non-transparent items -- making it useless for imaging. Or is it? According to Nature, scientists are honing methods to reassemble scattered light that passes through opaque objects to create a usable image on the other side, Superman-style.