Gesamtlänge aller Episoden: 7 hours 57 minutes
How the effects of World War I caused Russia to become a communist country in 1917.
The reason why a physicist decided to name his cat as the co-author of his research paper.
One of many questions that scientists still have about the universe - why is there more matter than antimatter?
A tragic event in history that contributed to the controversy surrounding nuclear power.
A library in Turkey that rescues books that have been thrown away.
Learn how our eyes detect colours, and why some light is invisible to humans.