2021 Rainforest Calendar! Rainforests are some of the most biologically diverse places in the world. They’re the home to 45% to 75% of all of Earth’s species. It is believed that there may be millions of species still unidentified within them! We know that visits to these majestic places are rare, so in this 12 month nature calendar we captured as much of their beauty as we could. Enjoy our inspirational wall calendar 2021.