With our 17th annual Hands-on Science conference, at the very beginning of a new decade that many of us are expecting to be the turning point of a certain civilizational regression we are witnessing at different levels in our societies and world for quite some years already, we decided to celebrate the importance of Science Education to our lives and humankind as a crucial step to Discover and Understand the so many Wonders of Nature. The book herein aims to contribute to the improvement of Science Education in our schools and to an effective implementation of a sound widespread scientific literacy at all levels of society.