How to Buy a $1M Home in Hawaii for $1.5M, $3M, and $5M per Year

Now Playing: US officials discuss the threat of climate change and other threats in the Pacific Ocean Now Playing “Battlestar Galactica” star Michael J. Fox is back as a voice on the “Black List,” The Hollywood Reporter has learned.

Now Playing: New “Serenity” trailer shows off ‘Star-Crossed’ spinoff Now Playing ‘The Walking Dead’: Who is Lincoln Campbell?

Now Playing Donald Trump Jr. and son Jared Kushner’s wedding: A timeline Now Playing President Donald Trump’s daughter Ivanka’s husband has a medical emergency and will be transported to an area hospitalNow Playing The world’s richest woman, the richest man, the world’s most famous athletes, and a new supermodel join forces for the Women’s March on WashingtonNow Playing Former presidents Barack Obama and George W. Bush join forces to make a bold statement about climate changeNow Playing Trump is pushing back against media coverage of his tax returnNow Playing A new documentary explores the lives of some of the worlds most famous people and explores their relationships to climate change