April 6 2018 6:19pm

How did Sergei and Yulia Skripal survive a nerve agent attack?

After being in critical condition for weeks, former Russian double agent Sergei Skripal and his daughter Yulia are now expected to survive an attack with a military-grade nerve agent. Dawna Friesen speaks with toxicologist Dr. Michelle Carlin about how it was possible for the pair to make such a remarkable recovery.

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