Catalyst

Tamiflu, Sun's Lost Sibling (16x5)

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Tamiflu: Imagine a Hollywood doomsday scenario - a flu pandemic sweeps the world, hundreds of millions of people are infected. How prepared are we for a flu pandemic? Sun's Lost Sibling: In a family reunion like no other, astronomers reunite our sun with her long lost sibling. Dr Graham Phillips meets the new relative and explores its similarities with our sun.