Science & Medicine
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From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.
September 12th, 2016
Episode 117 of 126 episodes
There are two types of time travel—into the future, and into the past. Past time travel might be impossible—but on the other hand, we already travel into the future all the time, as Dr Karl explains.
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