More questions regarding CO2 emissions

If my house burns down by accident, will I be liable for the environmental impact of the CO2 emissions? Will those emissions be covered by my insurance, or will such insurance cost more?
(I'm pretty sure I know the answer to this, as much as I'm sure the insurance companies are thinking about it as I write.)

Will arsonists get additional penalties for the resulting CO2 emissions from the fires they set? (I fully expect this to come up in California soon!)

Will cremation be discouraged? How much CO2 does a cremation liberate?