He does have a great reputation - won a time hero of the environment book award so assume he knows what he is talking about
But he actually has no scientific qualifications - links are from 2017 so not sure if anything has changed, but even his wiki page doesn't list any. he has a degree in peace and global studies (whatever that is)
https://nuclear.foe.org.au/michael-shellenbergers-pro-nuclear-lobby-group-environmental-progress/#:~:text=In%20fact%2C%20he%20has%20no,on%20the%20Environmental%20Progress%20website.
https://reneweconomy.com.au/is-there-a-future-for-pro-nuclear-environmentalism-94038/
