Narrator: The quest for the perfect tree is a rite of the holiday season, and ever since the late 19th century, people have been trying to come up with an artificial version. By the 1960s ...

When it comes to decorating for the holidays, Christmas trees, specifically, are among the highly-debated pieces, especially when considering whether to purchase artificial or real trees.

While great efforts are underway to replenish the world’s tree stocks, Belgrade has gone in a different direction, creating artificial “liquid trees” to capture carbon dioxide instead.

Trees compete for space as they grow. A tree with branches close to a wall will develop differently from one growing on open ...