Humans are, without a doubt, responsible for the bulk of litter and pollution on our planet. While we carry the majority of responsibility in reducing our impact, some researchers are exploring how animals can help lessen our overall burden. How does this work? For example, six crows have been successfully trained to pick up trash in a theme park located in western France. This can be any sort of small trash, and especially cigarettes.
That's right: Crows are doing their part in helping the planet. Crows are actually very intelligent birds, so it's no surprise that they're easy to train. They enjoy games and forming relationships with humans. Even more surprising, is that scientists have found crows can recognize and remember people's faces.
Puy du Fou, a historical theme park, is located in the Vendée region of Western France. "The goal is not just to clear up, because the visitors are generally careful to keep things clean," Nicolas de Villiers, whose father opened the park in 1978, tells the AFP, but also that "nature itself can teach us to take care of the environment."