Dear Dr Offit,
I have admired your work in support of vaccines, and your willingness to face down the anti-science attacks on vaccination. I was, therefore, greatly dismayed to read your column in the Daily Beast recently, reviving a set of discredited attacks on public health and environmental science, centred on the spurious claim of a global ban on DDT. I have linked a blog post and article covering the key points, which you can easily check for yourself
As I note in the post, giving credence to discredited anti-science attacks like those of Stephen Milloy is a gift to the anti-vaccination movement which they are already exploiting. I urge you to investigate this issue more carefully and publish a follow-up column setting out the real situation.
I would be happy to correspond further and send you more information if needed.
Update 21/2/17: I received a fairly terse reply to this email, reiterating a number of spurious claims about Carson. My email in response went unanswered, as did a followup. This is disappointing, but if there’s one thing I’ve learned in 15 years of blogging it’s that changing anybody’s mind is very difficult. I’ve done my best to apply this lesson to myself and be more open to new evidence – long term readers can judge if that’s been successful.