The central question that Sky in a Bottle by Peter Pesic seeks to answer is why the cloudless daytime sky is blue. The bottle in the title alludes to experiments that have been performed over the ...

This means that under the right conditions they are visible, and will sometimes appear against a white or light-blue background such as the sky. Because white blood cells are so small, they can be ...

If you’ve ever seen video of a rocket going into space, you can see the blue sky fade away to a black background as it climbs above the atmosphere.

How our ideas about point of view got all turned around.