Farewell and thanks for reading
This is my last entry for this page - I'm leaving the BBC to work, initially, on ocean conservation issues.
While this page will no longer be updated, it will stay here for reference.
I hope you've enjoyed reading my blog down the years - I've enjoyed writing it, and have appreciated your comments.
To keep up to date with news and views about the environment, I hope you'll keep reading the science and environment pages of the BBC News website, and my science correspondent colleagues Jonathan Amos and David Shukman.