I had similar idea, a tool to model the economy of a country. The idea would be to give to every one a simple tool to groundcheck political programms before voting. The economy is complex, there is no simple solution to a complex problem, only trade offs. But you need to see the effect of these trade offs before making a decision and elect one or another politician.
There is a french company (https://unseenlabs.com/fr/) that specializes in tracking ship at sea through observing their RF emission from space. Cool tech. I'm pretty sure their main clients are not all civil...
Nearly 40% of shipping volume worldwide is moving fossil fuels (coal, oil, gaz). The easiest way to reduce drastically shipping emission is reducing usage of fossil fuels...
Very neat! I'm hydrodynamics by background and I wondered a long time ago why this kind of approach was not used as I always found ocean waves to look awful in movies. Once you describe ocean sea state in frequency domain, it is quite easy to give to floating objects like ships realistic motions using what we called RAO in this field (linear operator). You can also model sea disturbance (diffracted and radiated waves) caused by an object in a similar fashion.
I visited conservatoire des arts et metiers museum in Paris a couple years ago. It is full of fascinating scientific devices from the past. Among then was the timbre analyser. I was blown away. A purely analogic spectrum analyser.
The problem with this line of thinking in my opinion is that we have 30x3% problems... sure individually they would not make a difference but we need to act on all front.
