From the heights of human ingenuity to the depths of engineering catastrophes, Modern Marvels continues to explore the most awe-inspiring achievements in the world. The ultimate celebration and investigation of engineering excellence, each episode of Volume 4 is commemorated with the inspiration and determination that produced some of the most awesome and ordinary inventions and gadgets in our modern-day lives. Be immersed in amazing technologies and remarkable creations, including both the practical and dead-weight items people choose to keep within hand’s reach in "What’s in Your Pocket?", the unsung hero in the fight against friction in "Grease", and the treat we loved as kids and savor as adults in the sweetest of all modern marvels, "More Candy". From world altering to hip and cool to just plain delicious, Modern Marvels presents the engineering feats, often taken for granted, that make life a little more interesting.