Movable flood-protection weirs are being installed in the UK for the first time in Leeds, after more than 2,000 homes were flooded in 2015.
Lifting in New York poses a unique challenge overseen by high levels of regulations. Quickly-built and tightly-spaced skyscrapers combining with busy streets, problems with electricity supply, and mazes of subways. Now NYC Department of Buildings plans to prohibit the use of older cranes. Will North reports.