The theoretical advantage of biopolymers isn't just that they biodegrade, it's that they biodegrade into materials (like methane) which can form the feedstock f

The theoretical advantage of biopolymers isn't just that they biodegrade, it's that they biodegrade into materials (like methane) which can form the feedstock for bacteria which in turn produce the biopolymers. This is better than paper underwear because the paper->CO2->tree->paper cycle is much slower.