Is this the year to go fake? Everyone wants to reduce their environmental impact, but experts warn there are no easy solutions when choosing an eco-friendly Christmas tree.
Tis the season to take sides (over the tree)
Glossary
Martin Luther - A 16th Century German priest known for his role in the Protestant Reformation and as the namesake of Lutheranism.
Solstice - Either of the two moments in the year when the Sun's apparent path is farthest north or south from Earth's Equator.
CO2 - Carbon dioxide.
Methane - A particularly strong greenhouse gas produced by fossil fuels and cattle.
Greenhouse gas - Gases in the Earth's atmosphere that trap heat, contributing to global warming. Carbon dioxide, methane, nitrous oxide and water vapour are all greenhouse gases.
Mulch - Material, including decaying leaves and compost, that is spread around a plant to help it grow.
Charles Dickens - The Victorian novelist is credited with inventing Christmas as we know it today through the warm descriptions of it in his books.
Yuletide - An old word for the Christmas season.
Queen Charlotte - Charlotte of Mecklenburg-Strelitz was the 19th Century German wife of Britain's King George III.