Update README.md

README.md

@@ -105,10 +105,9 @@ Join us on slack at [**#awesome-explorables**](https://awesome-explorables.com/)
 
 
 ## Science
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+*[↑ top](#contents)*
 * [ncase.me](http://ncase.me/simulating/) - simulating the world (in emoji😘)
 * [ncase.me](http://ncase.me/neurons/) - neurotic neurons, an interactive animation on how exposure therapy works
-*[↑ top](#contents)*
 *[Grail Handwriting Recognizer](https://jackschaedler.github.io/handwriting-recognition/) - jack schaedler's active essay on how the grail handwriting recognizer works
 * [Exploring Emergence](http://www.playfulinvention.com/emergence/index.html) -  an introduction to cellular automata (from 1996! requires flash.)
 * [internet-atlas.net](http://internet-atlas.net/) - critical atlas of internet