These are not very good gen-engineering ideas but we may be compelled to engage in gen-engineering of some kind. It will be risky, with side effects that we'll

These are not very good gen-engineering ideas but we may be compelled to engage in gen-engineering of some kind. It will be risky, with side effects that we'll know but more worrying will be the unintended effects that we didn't predict. They more we can do to reduce our negative output, the less ham-fisted tinkering with the planet's systems we'll have to do.