Some of the biggest riddles and unknowns facing scientists today are investigated in this fascinating BBC science documentary series.

Does science have all the answers? It seems as if the more we discover, the more problems emerge. Exactly how old is our universe? Why are the two sides of our Moon so different? How did iron from space end up next to the body of Tutankhamun? Why do we even exist? Across six episodes, this science documentary series delves into some of the most perplexing problems faced by science and tries to find some solutions.

Watch Science's Greatest Mysteries in the US: https://bit.ly/3YF5WB6 and Canada: https://bit.ly/3HTuwrX with BBC Select.

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