CRIIRAD a serious and honest non-governmental and non-profit organisation that works to improve information and protection against ionizing radiations
Birdlife international the world's largest nature conservation Partnership
Colibris' movement of Pierre RABHI ("Earth and Humanism"), website in french
Website of S. Poujouly Electrical engineering professor (IUT of Cachan, France)
Basic Electronics an old but good website on basic electronics and much more...