Prince Charles has teamed up with environmental campaigners Tony Juniper and Emily Shuckburgh to create peer-reviewed book about climate change.
A group of artists filled a street in Toronto with thousands of books as a way to fight pollution, noise and traffic.
When "smelling" our fears is never enough, dogs can also understand what our facial expressions mean.
An antique book about the second Dutch expedition of the Mascarene Islands depicts the first drawing of the now extinct dodo bird. This species went extinct in the 17th century from a combination of climate change effects and rapid island colonization.
The Appalachian Trail: you've likely heard of it. After all, each year countless hikers set foot on its paths, while thousands opt to hike the whole thing - all 2,000 miles of it. However, back in 1955, few even knew that this historic trail existed, never mind that it was possible to make it from end to end. That all changed after Emma Gatewood, a 67-year-old grandmother from Ohio, slipped on a simple pair of sneakers, grabbed a modest bag of supplies, and set out on the longest walk of her life.