When the Flash uses his unique powers to alter a tragedy in his past, he causes a time paradox that could devastate the present — and the future.
/cdn.vox-cdn.com/uploads/chorus_asset/file/25566661/454688286_10162253797240312_4972473333184729900_n.jpg "YouTube shares a final blog post from Susan Wojcicki on fighting lung cancer")
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When the Flash uses his unique powers to alter a tragedy in his past, he causes a time paradox that could devastate the present — and the future.