Nowadays humanity has some great challenges towards the future of the world, which will affect all of us. One of the most important ones is the conservation and improvement of the natural environment. We must do anything to achieve that.
Jordi Vilardell of Agergas explains the benefits of converting waste to energy and how this could help dramatically reduce our dependence on fossil fuels.
The importance of understanding the difference between waste and recyclables. By Robin Wiener, Institute of Scrap Recycling Industries, Inc.
America's sewer system seems to be constant need of upgrading. When they were upgraded in 1972 under the Clean Water Act to handle growing populations and increasing runoff of rainwater and waste, many sewer systems were already over a hundred years old.