In today's world, industrial activity, consumption, and land development have become ordinary ways in which we work and expand our societies. But for these reasons, conservation and environmentalism are more important than ever. There are obvious benefits to making changes aimed at reducing harmful human impact to our world, namely protecting and preserving ecosystems, ultimately resulting in the extension life as we know it on this planet. But there is also a sociopolitical layer to environmentalism–immediate and imminent threats to impoverished and disadvantaged societies–which must be explained and addressed now. The powerful speakers below are some of the world's top experts versed in all aspects of conservation. It is only "natural" to salute them this Earth Day.