In reply to Lindsay Leake (January 13):

Lindsay, everything you’ve asked me I’ve replied to already, using data and evidence. 

Dr Finkel (Oz CO2 cancellation means no change), Prof Pitman (no drought link), the CSIRO (southern hemisphere is a net CO2 sink) and BOM (see rainfall, cyclone trends) data support my case. They mightn’t like it, but our so-called mitigation won’t change an...