Science, Maths & Technology
Scales in space and time
...think when they look at an oak tree. JIM ILEY When I look at this oak tree, I think about all of the unseen chemical activity that’s going on to make it grow. The structural material that holds this tree up is largely cellulose. And that’s made up of lots of little glucose molecules. Those units are tiny, about half a nanometer from end to end. So it takes about 12...