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The basic idea is this: E. coli “smells” chemicals it’s attracted to with a set of nose-like receptors and decides how to swim. Depending on what it senses, it can either use its flagellar tails to swim forward—this is known as a “run”—or it can spin in a random direction (a “tumble”). By running when the getting is…
A fallen flower Returning to the branch? It was a butterfly.
Michael Dickmann: Here's what the story is. There was this little tadpole and a fish that grew up in a pond, and they were always intensely curious about life outside the pond. And then, eventually, the tadpole grows into a frog and discovers that, because he's an amphibian, he can go out and see what life is like. So…
1. God is Change All that you touch You Change. All that you Change Changes you. The only lasting truth Is Change. God Is Change. ∞ = Δ 2. Prodigy Prodigy is, at its essence, adaptability and persistent, positive obsession. Without persistence, what remains is an enthusiasm of the moment. Without adaptability, what…
Now, with respect to literature, authors are frequently faced with the task of re-explaining and restating background material that has been explained well elsewhere. If you could just borrow that material, those existing good explanations, and incorporate them (with automatic credit where due), your efforts could be…
There is a slightly flawed yet very satisfying physical argument that gives some heuristic understanding of the uncertainty principle. Quantum mechanics endows all particles with a wavelike behavior, and waves have one striking property: they are disturbed only when they encounter objects larger than their wavelength…
When Newton saw an apple fall, he found In that slight startle from his contemplation— 'Tis said (for I'll not answer above ground For any sage's creed or calculation)— A mode of proving that the earth turn'd round In a most natural whirl, called 'gravitation'; And this is the sole mortal who could grapple, Since…
We fondly imagine that evolution drives toward higher intelligence. But eagles would think evolution favored flight, elephants would naturally prefer the importance of great strength. Sharks would feel that swimming was the ultimate desirable trait, and eminent Victorians would be quite convinced that evolution…
‘The ancient teachers of this science,’ said he, ‘promised impossibilities and performed nothing. The modern masters promise very little; they know that metals cannot be transmuted, and that the elixir of life is a chimera. But these philosophers, whose hands seem only to dabble in dirt, and their eyes to pore over…
I was swimming in a large indoor pool with Peter. When I threw the pool's rubber ball to Peter (as was natural for me to have done), he dove under the ball as it hit the water and batted it with his snout accurately into my hands. After a few throws and precision returns, Peter's returns became increasingly inaccurate…
What, then, is the difference between human and other animals? Are their bodies made differently? As a matter of fact they are remarkably similar. Cat and dog bodies are used in premedical anatomy studies due to the similarity of structures with identical name and function. Is it that they just can't experience pain?…