Plugging Up a Subway Tunnel
“Engineers have developed enormous balloon-like plugs for placement at key points in subway tunnels. Once inflated, the plugs could hold back floodwaters and reduce storm damage.”
Fresh Air with Terry Gross. From WHYY. Peabody Award-winning weekday magazine of contemporary arts and issues. Tumblr curated by associate producer Nell Boeschenstein with contributions by associate producer Heidi Saman.