Arizona PBS PreviewsSinking Cities: 103 Preview | 30s Discover why London's Thames Barrier is no longer enough to keep the city safe from climate challenges. The system was once successful, but now London must explore both low-tech fixes and some of the most advanced solutions in the world. Aired: 11/14/18 Rating: NR checkmarkAdd to WatchlistProblems Playing Video?Report a ProblemClosed CaptioningShare:Share this video on FacebookFacebookShare this video on TwitterTwitterShare this video on Google PlusGoogleShare this video via EmailE-mailEmbedEmbed Code for this videoEmbed CodeArizona PBS PreviewsSinking Cities: 103Width in pixels px Height in pixels px Copied to your clipboardUnable to copyLabelCopy to ClipboardClick to copy embed code for videoCloseCloseReport a ProblemBefore you submit an error, please consult our Troubleshooting Guide.Type of ErrorVideo doesn't loadVideo loads, but doesn't playVideo jumps back/forwardOnly audio is streamingSponsorship playback errorOtherPlease add more detailsCancelSubmit ReportYour report has been successfully submitted. Thank you for helping us improve PBS Video.CloseCloseClose