At first acoustics attributed to the different sounds only a limited number of characteristic features.
I was recently looking at what they can actually do to reduce consumption of petrol. It would be quite possible to build automobiles out of carbon fibre that would be just as strong, weigh 10 times less and consume 10 times less petrol.
I don't write about the same thing every time, everyday, different things are happening out there and if you take the time to look around, you can see that, then you can put it all together and tell the story.