Earth Day can be rather depressing, given the slew of statistics showing that we've got major environmental problems, from endangered species to global warming. But there are plenty of reasons for optimism, too.
Image: http://mashable.com
Earth Day can be rather depressing, given the slew of statistics showing that we've got major environmental problems, from endangered species to global warming. But there are plenty of reasons for optimism, too.
Image: http://mashable.com