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Find out what makes science so controversial with this week's Science Hour.
Find out how our Earth is doing with Andrew C. Revkin of NY Times.
The science of catastrophes.
What will our first contact with intelligent life from another planet be like?
Bacteria, Viruses, Parasites and science tattoos.
Invisibility, why the sky is blue, light sails and weird science facts.
Science like you've never seen before.
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