# 4 environmental 'heresies'

- Institution: TED
- Department: TED@State
- Speaker: Stewart Brand
- Year: 2009
- Level: For everyone
- Language: English
- Subjects: Earth and environment, Society and politics
- Source: [TED](https://www.ted.com/talks/stewart_brand_4_environmental_heresies)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The man who helped usher in the environmental movement in the 1960s and '70s has been rethinking his positions on cities, nuclear power, genetic modification and geo-engineering. This talk at the US State Department is a foretaste of his major new book, sure to provoke widespread debate.

## Lectures

1. [4 environmental 'heresies'](https://invisiblenetwork.ai/learn/ted/stewart_brand_4_environmental_heresies/2fac7feef9f1), 17 min (TED's player)