December Solstice

Today is the December or Winter Solstice. This marks the shortest day of the year for those of us living in the northern hemisphere. It is also the first official day of winter for us. People living in the southern hemisphere are enjoying the longest day of the year today though and just beginning their summer! Check out the Friday Morning Science archives and watch the episode on Seasons for an explanation of why the seasons are different for different parts of the planet.