Share: The first Earth Day was held on April 22, 1970, and was created in response to an oil spill during the previous year that dumped more than three million gallons of fuel into the Pacific Ocean and killed over 10,000 sea mammals and birds. Fast-forward 51 years and Earth Day observances are now focused on the challenges created by global climate change and ongoing efforts to mitigate the seemingly endless assaults on the ecosystem. Environmentalism and investing do not need to be considered as parallel pursuits. Indeed, a great many public companies are actively involved in environmental preservation. On this Earth Day, let’s hold up a spotlight – solar powered, of course – on five stocks that could bring multiple hues of green to a portfolio.