I have some concerns with the logic behind this article...
`Will sustainable aviation fuels take off?'
LINK
This bit bothers me...
...Sustainable fuels are synthetic alternatives to fossil fuels, made from renewable sources. These can include waste cooking oils, vegetable fats and agricultural waste, as well as captured carbon dioxide. The advantage of burning fuels like these is that it does not add to the overall load of carbon dioxide in the atmosphere. The carbon emitted has only recently been removed, either by plants or by chemical processes. By contrast, burning fossil fuels releases carbon that has been stored in the earth for millions of years...
I'll accept that
it does not add to the overall load of carbon dioxide in the atmosphere because
the carbon emitted has only recently been removed in contrast to burning ancient reserves of fossil carbon. But to me this is a `get out of jail free' card. Instead our objective should be that any carbon removed from the atmosphere should be prevented from returning to the atmosphere. Taking out then putting back is simply not good enough. We've allowed climate change to progress so far that even if we stopped pumping out CO2 now there's so much up there that Earth will keep on warming for a very long time. We've got to
lower the amount of CO2 in the atmosphere, not just try to keep it constant; it's too late for that. With the present state of the world I don't feel much hope for our descendants and I expect the only way out of the problem will be a catastrophe that will bring about a re-set - and it won't be pleasant for life on this planet.