What's a Passive House design? Here's what L.A. can learn from Colorado's worst fire as it looks to rebuild

As the wildfires in Los Angeles left hundreds of homes in ruins, one family that lost everything in the worst wildfire in Colorado history says there's a better way to rebuild.

Three years ago, Erik Ela, his wife and his now 4-year-old son, Alex, lost their two cats and their home in the Marshall Fire. It was two days before Alex's birthday.

"We've experienced something that I never thought you'd experience and I'm ready for it to happen again," Ela said.