An episode of ID the Future from the vault features a lecture excerpt by Biologic Institute scientist Doug Axe on lignin, which makes up 30 percent of non-fossil organic carbon on the planet. Listen to it or download the podcast here.

Former BIO-Complexity journal editor and Heretic co-author Matti Leisola has argued that lignin is a troubling case for Darwinian evolution. In this lecture excerpt, Axe explains Leisola’s argument and suggests that lignin fits well in a design paradigm.

Photo: Bark of a pine tree growing in Tecpan, Guatemala, via Wikimedia Commons.