You asked us a lot of questions and now I'm going to try to answer as many as I possibly can in 45 seconds. So ready the timer, please, let's do this.
Dogs are not colorblind; it takes 8 minutes, 20 seconds for light to travel to Earth from the Sun; a New Orleans dentist named Levi Spear Parmly in 1815 invented dental floss.
We could be alone in the universe but this is a question that can't be answered today; the day is coming soon when you could have a robot butler; the tallest person ever known was Robert Wadlow, who in 1940, measured 8 feet 11.1 inches; and 12 people have walked on the moon.
On the question of how did life begin, I will pass, and I'm also going to pass on what makes us human. But, here come some more answers.
A coin that falls from the Empire State Building could not kill you; it's pretty much true that no two snowflakes are alike; the first woman to win a Nobel Prize was Marie Curie, and she won two, in 1903 and 1911. My favorite science figure of all time is Carl Sagan. I like long walks on the beach. Wait, what?
And that ends our lighting round, on a very weird note, but for more insightful videos like this, check us out every day at Smithsonian.com.