Jan. 11, 2018: Big investors have called on Apple to invest in software that would limit the amount of time that children can spend using its smartphones. Is it needed? And could it work? The Takeaway hosts that conversation, plus a look at the stalled relief effort in Puerto Rico; the inefficiencies of the flu vaccine; insurance companies fighting climate change; leaks with the Dakota Access Pipeline; and how Spotify's IPO could change the music industry.