Should we also experiment with renewable energy?

I live in Brazil, one of the leading countries in renewable energy. I can say that we are doing our job on saving the world. Our main energy source is renewable, in contrast with the european union, japan and the united states, which use fossil fuels and gas for example. We ourselves, invented the technology to make cars run on ethanol and exported it to the world. Every new brazilian car comes out of the box running both gas and ethanol. Most drivers tend to choose ethanol, because its cheaper and greener. Getting energy from the waterfalls is also a big thing here. We have the biggest hydroelectric plant, that powers up argentina, paraguay and most of brazil. I really hope that by hosting the 2014 World Cup and the 2016 Summer Olympics, the other countries can learn something from us. Im not saying its the perfect way of life, just saying that it's how y'all "developed" countries should act. I mean, no one stopped you when you began to industrialize, and now we are trying to make it as harmless to the environment as possible. Look at our rain forest, its the biggest in the world

Solar & wind have been done & in practice, the ROI numbers don't stack up. Decentralized renewables are a better option. There are much better options being developed right now. The best I've seen are by private inventors in the USA. It's easy & very, very cheap to get your home off-grid with an abundance of energy using their technology that has been with us since Tesla's time.

Actually, we are. There are all kinds of experiments going on with wind and solar power to generate electricity. There is research being conducted on other ways to generate power as well. The problem is, none of them are perfected and nothing has the capability to completely replace fossil fuels as the main source of energy. Personally, I think the main focus for wind and solar power should be for smaller applications. If it was cheap enough for the average homeowner to add to his home as a supplement to his power needs and a majority of people installed it, we would cut down on our use of fossil fuels. If commercial buildings installed wind and solar on their roofs to supplement their power needs, think how much that would save. If small, individual wind and solar applications could provide half of the energy needs, we could cut fossil fuel usage by half. Solar applications for the homeowner are becoming more common now but they're still very expensive and few people are willing to pay more for solar than what it would cost to just use what the electric company provides. If they continue to make solar panels cheaper though, you'll see more people installing them. I'm going to look into it when I build my house. If I can afford it, I'll do it.