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  Emotional Interview with Robert Downey Jr. - YouTube

  https://www.youtube.com/watch?v=5WI6MHH7Y7I

  Jimmy and Robert have a conversation with each other while adapting to random emotional situations. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: ...

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  World's Roundest Object! - YouTube

  https://www.youtube.com/watch?v=ZMByI4s-D-Y

  The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram. Support Veritasium on Patreon: http://bit.l...

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