Stewart Brand, the environmentalist most famous for editing the Whole Earth Catalog in the 1970s, will be speaking at next week’s Fortune Brainstorm: Green about why biotech crops are green and sustainable. Mr. Brand is currently co-chairman of The Long Now Foundation and recently wrote the book Whole Earth Discipline, where he argues that the green movement’s rejection of agricultural biotechnology is antithetical to its goal of preserving the environment.

Stewart Brand will be speaking on Monday, April 12 from 7:15-9:15 PM PST. You can view his speech via a live webcast by registering online at: http://www.fortuneconferences.com/brainstormgreen/.