In the decades since his presidency ended in 1981, Jimmy Carter has done a lot to warm America's hearts.
As NPR reported, he founded an organization that aims to resolve conflicts that often arise in the Middle East, which earned him a Nobel Peace Prize in 2002.
He has also shown a seemingly unbreakable dedication to his work building houses for Habitat For Humanity, which has seen him persevere after hip surgery and a fall that required 14 stitches. These incidents happened late last year within a month of each other.
But as we recall the impressive achievements the 95-year-old former president has to his name, it's easy to forget that he was also an early proponent of environmentalism and renewable energy.
That is, it was easy to forget this until now.