Every so often someone contacts me wishing to donate money to the cause of this blog and desiring me to add a tip jar to facilitate that. On the whole I'd just as soon keep the blog non-commercial since my day job amply covers my family's needs. However, there are times when I want to buy books but am restrained by the desire to keep the book budget from reaching astronomical proportions. It occurs to me that this is a way that readers could contribute to the blog and so I've created an Amazon wish list out of the (several years of) deferred items in my cart there.
So if you are one of those people so moved, check it out: there are items ranging from a few bucks into the hundreds for various academic tomes on climate and an astounding $2300 for a used copy of "Sedimentary Basins and Petroleum Geology of the Middle East" (which I would love to have should any of my billionaire readers be so moved). So there are opportunities to give at any plausible expenditure level. There's also a button over in the right hand sidebar of the blog for long term access to the list.