It looks interesting and it is good to know that the development of other energy media than carbon or hydrocarbons is being studied.

But I wonder, don't those microwaves spread into the atmosphere? What about the Earth's electromagnetic field? And is it possible that something similar to what happens with a microwave oven can happen? Could it become a weapon? There are many things that remain unresolved.

Without counting the energy expense (plus pollution) and money that will be caused by sending all that equipment into space.

I don't know if it's really zero percent dangerous to the environment or to humans. Sometimes I wonder if the increase in human neurological problems is due to the use of microwaves and cell phones.

Thanks for sharing :D