Experiments into the effectiveness of conservation can help us learn what works best.
Communities and indigenous people would like to conserve forests, nature and biodiversity. But their priority, like that of most people, is improving their own well-being and that of their children.
Many human-wildlife conflicts are rooted in struggles over land. Some countries, notably Mexico, have found ways to protect both nature and the rights of indigenous people and forest dwellers.
Combining new technologies, including Global Forest Watch, a Forest Monitoring App and Participatory 3D Modelling, brings out traditional knowledge of the elders.
John Muir, born on April 21, 1838, was one of America's first great conservation advocates. His letters and diaries convey the emotions Muir felt in Yosemite Valley, his 'sanctum sanctorum.'