Over the last few decades, physicists have come to realize that about 90% of the mass of every galaxy in the universe is made of an unseen substance called dark matter.

Quantum physics is considered by many to be the single most important advance in our understanding of the universe. This video introduces you to quantum physics via the double-slit experiment and the concept of wave-particle duality.

Where does technology come from? Find out how the four key scientific concepts of electromagnetism, relativity, and quantum mechanics have empowered us to engineer technology.