5: Average number of dark matter molecules in a can of Campbell’s soup, if dark matter were made of the same size molecules as soup

71.4: Neil Armstrong’s lifetime average height above the Earth’s surface in kilometers

0.000000000000000019: Fraction of the Earth’s mass made up of Roombas

0.04: Average number of people directly beneath the International Space Station at any given time

17: Annual cost in billions of dollars to give every cat in America, feral or domestic, a Netflix account

119: Amount of time, in years, for which the Curiosity rover's generator could power a Nintendo Gamecube and LCD monitor

101: Global number of civilians per soldier

1.85: Average length, in meters, of the human genome

1.85: Height, in meters, of Bill Nye

326: Weight of a Tesla Roadster sports car measured in gallon jugs of water

20.1: Heat production, in kilowatts, of a nuclear submarine's crew.

10,000,000,000,000,000: Approximate number of ants in the world

100,000,000,000,000,000,000: Approximate number of transistors in the world

0.000000000000000056: Growth rate of a baby in units of the speed of light

1: Number of What If books I'm announcing today blog.xkcd.com/2014/03/12/wha…

22.1: Average weight, in kilograms, of a human leg

2: Minimum diameter, in centimeters, of a rope made of DNA strands that would be strong enough to lift a human

950: Approximate total amount of pet snake in the US, in miles

1,961: Number of non-librarians in the US per librarian

87,500,000,000: Current world population in gallons