But my vote for Venus's most peculiar feature is the presence of craters that are all relatively young and uniformly distributed over its surface. This innocuous-sounding feature implicates a single planetwide catastrophe that reset the cratering clock... turning Venus's entire surface into the American automotive dream-a totally paved planet.

Kids are born curious about the world. What adults primarily do in the presence of kids is unwittingly thwart the curiosity of children.

The universe is so amazing and so limitless, who wouldn't want to study the universe?

A common way to compute density is, of course, to take the ratio of an object's mass to its volume. But other types of densities exist, such as the resistance of somebody's brain to the imparting of common sense.

No matter what eyewitness testimony is in the court of law, it is the lowest form of evidence in the court of science.

Nature is not here to keep you alive. It has just as many ways to kill you as it does to sustain you. And if you cherry-pick this fact, you are left thinking that earth is some haven for life, but 96, 97 percent of all species that ever lived on earth are now extinct from the actions of the earth itself and an occasional asteroid to stir the pot.

America has an economy reversing relative to other nations in the world. And I want to turn that around. And one way I know to turn it around is to get everyone excited about what it is to innovate again.