What skills enable an individual to maintain his or her employability? The skills for professional success in the 21st century are not the same as in the past. While the 20th century's professionals used so-called "routine" skills, the last 20 years have seen a demand for interaction and analysis skills. It is now essential to know how to question the reliability of information, to be creative, work in a team and communicate clearly. Faced with the speed and variability of information, we must adapt, take initiatives and produce under pressure and uncertainty. While the subject is still reserved for specialists in Europe, thousands of schools and companies around the world have turned to these new skills. 'The 21st Century Skills' offers an analysis of these skills through a model: their need, operation and development potential. Going through psychology, neurosciences, human resources, philosophy, History and biology, this book is at the crossroads of sciences and our everyday life.