Here are last week's best online videos, including: Stephen Colbert breaks down Cohen's Trump recording, an extreme high jump challenge for talented kids, bowling gone wrong, plus heaps of new superhero movie trailers!
YouTube Roundup: Last Week's Best Online Videos
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Speculative fiction is the literature of change and discovery. But every now and then, a book comes along that changes the rules of science fiction for everybody.
I drive a lot of different vehicles when I need to get around, but I'm always a little worried when it's time to fill them up. Will something happen if I use 91 instead of 95, or vice versa? This thread at StackExchange answers the question.