/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: johntothusa https://cdn.slidesharecdn.com/profile-photo-johntothusa-48x48.jpg?cb=1523299696 professional environmental consultant. lifelong interests with energy efficiency, conservation, natural building, sensible energy and local food production, e.g. hydroponics, aquaponics and aquaculture.