California's iconic Highway 1 is fighting a losing battle against climate change; can it survive?

California marked a milestone this month with the return of an uninterrupted Highway 1 through the perilous yet spectacular cliffs of Big Sur. The famed coastal road had been closed for more than three years after two major landslides buried the two-lane highway, and it took unprecedented engineering might and precarious debris removal to once again connect northern Big Sur with its southern neighbors.