Green energy sources aren't enough and to create them we need energy produced by oil/gas/etc. Electric cars aren't the solution because we would need more energy to charge the batteries (my bet for the future is on hydrogen). In first place they should replace all the coal power plants in the world but China and India are building them by the hundreds, they produce more pollution than anything else, that's why I believe nuclear power is the answer for now. Pollution is killing the animals and trees with acid rains and poisoning air and I see all the hypocrisies in the world claiming the governments should act but they own smartphones, laptops, TVs. etc that are one of the biggest reasons why we have high levels of pollution. People travel, car or airplane, we eat meat, we buy cheap crap made in China - the biggest polluter in the world, we the people need to change our way of life but increasing our taxes for that money to go to the rich people (investors, politicians, etc) giving them business to pretend they will save the world they contaminated in first place.