A Quote by Mary Roach

Chew on this: Human teeth can detect a grain of sand or grit 10 microns in diameter. A micron is 1/25,000 of an inch. If you shrank a Coke can until it was the diameter of a human hair, the letter O in the product name would be about 10 microns across.
If Pizza sizes were given in area not diameter, you'd see instantly that a 7 inch is less than half the size of a 10 inch pie
Small bodies, about half a micron in diameter, and later referred to under the name of 'mitochondria' were detected under the light microscope as early as 1894.
A reduction of meat consumption by only 10% would result in about 12 million more tons of grain for human consumption. This additional grain could feed all of the humans across the world who starve to death each year- about 60 million people!
An Ebola particle is only around eighty nanometres wide and a thousand nanometres long. If it were the size of a piece of spaghetti, then a human hair would be about twelve feet in diameter and would resemble the trunk of a giant redwood tree.
The diameter of the earth is greater than the diameter of the moon and the diameter of the sun is greater than the diameter of the earth.
If you draw the entire timeline of humanity from the time humans first trod until today, let's just assume that's 10 feet on a timeline. My time on that timeline is so small that you couldn't point it out. Let's say it's smaller than a grain of sand, in that whole 10-foot timeline of humanity. And when I lost my hearing, it happened to coincide with human technology advancing to the point that the cochlear implant existed. If I had lost my hearing five years earlier, I would have had to quit my job. I would have lost my career. I've always been kind of in awe of that reality.
Getting 10,000 listeners for a free podcast novel is a lot easier than selling 10,000 hardcover novels at $25 a pop.
Man is developed from an ovule, about 125th of an inch in diameter, which differs in no respect from the ovules of other animals.
A basketball diameter is 10 inches and a rim is 18 inches so I made a 14-inch rim I put in to practice on. Few people could do that because it was so frustrating that it drove everyone but me nuts. That led to me shooting very high, which basic physics tells you is the best angle - the hole is bigger from above than from the side.
Most entrepreneurs don't need as many customers as they think. A lot of people think 10 is too few for a sample. But if all 10 refused a product, why is that not enough? If you want 100, 1,000 or a million customers, you first have to get 10.
Just remember: If one bird carried every grain of sand, grain by grain, across the ocean, by the time he got them all on the other side, that would only be the beginning of eternity.
The fruit flies we work with have the equivalent of about a 25 by 25 pixel camera. But that camera is very, very fast, about 10 times faster than the human visual system.
I would rather write 10,000 notes than a single letter of the alphabet.
The artist who pictures sounds as colours, who feels the difference in microns between one sea green and another... is not attending to what the world considers important.
I just went through my childhood attic with my sister. I'm not an expert, and I don't mean to put myself in that category, but thinking about Malcolm Gladwell and the 10,000 hours, I was like, Here are my 10,000 hours!
And I don't think you'd have to kill -- assassinate -- too many vivisectors before you would see a marked decrease in the amount of vivisection going on. And I think for 5 lives, 10 lives, 15 human lives, we could save a million, 2 million, 10 million non-human animals.
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