| Now Playing: What you need to know about breakthrough COVID-19 cases• Now Playing: Amazon poised to use radar to monitor sleep• | Now Playing: Delta variant tightens grip on US as kids under 12 await vaccine• Now Playing: People trade in everyday amenities for an adventurous life on the road• Now Playing: Inside the battle to teach critical race theory in schools• Now Playing: Could Jeff Bezos' Blue Origin launch mark a new age for commercial spaceflight? Now Playing: Representation on screen gives validation to trans and queer fans: Part 2• Now Playing: 'Pose' star Dominique Jackson on crippling fear of leaving home: 'It broke me'• Now Playing: Creators of famous Sophia robot reveal AI robotics for children, elderly• Now Playing: Online dating hits all time high as COVID-19 restrictions lift |
|---|---|
.