Geo Engineering has been used since the 1940s to cover up global warming. Today's materials are highly toxic to the environment. It is a public health hazard. Geo Engineering causes global warming in many ways including causing damage to the ozone and killing plankton. Nano-scale aluminum is a free-formed man made aluminum not found in nature. Well, it is now. The only clear link is the air plains. This is why people are so much against Geo Engineering. Just because Oxy may help a patient with arthritis feel less pain does not mean there will not be dire consequences and an advancement of the disease.