/ light

Why the sky is blue

<p>The next time a toddler asks you &#8220;why is the sky blue?&#8221;, how about answering &#8220;why Junior, the answer is simple.  <a href="http://hyperphysics.phy-astr.gsu.edu/hbase/atmos/blusky.html">Rayleigh scattering is the reason</a>.&#8221;, instead of your usual &#8220;Because it&#8217;s not green.&#8221; </p>