Two centuries on, this beautiful prayer for peace still brings people together around the world.
Both natural and artificial Christmas trees have environmental impacts, but they're not major. What matters most is what happens to the trees after the holidays.
Being misty-eyed about a perfect Christmas past will do you little good.
The tradition of carol singing at Christmas appears to be going through a revival and it's bringing communities together.
If you find yourself humming White Christmas this year don't worry ... you're not alone – and the science of earworms suggests why.
A Christmas tree could be for life, not to be dumped after one festive season.
But they haven't been without controversy.
Good Christian Men, Rejoice dates from the 14th century; O Come, All Ye Faithful may contain covert Jacobite symbolism and Silent Night is now UNESCO recognised.