Front Cover; Contents; Preface; Acknowledgments; About the Authors; Introduction; Section 1 -- Concept of Matter and Particle Model of Matter; Matter or Not Matter?; Solids, Liquids, and Gases; What ...

What does it mean to matter — to loved ones, to your community, at your job? Feeling like we have value and purpose in life is something humans inherently crave. But recent work on the topic takes ...