Why Balloons Rise and Apples Fall

We all know the world works in mysterious ways! But have you ever itched to know why? Why don't heavier things fall faster? Why do we have more energy when we're sitting upstairs? Is time travel really possible? And what happened to Schrodinger's poor cat? Why Balloons Rise and Apples Fall is an accessible look at the fascinating, awe-inspiring and sometimes downright weird world of ph...