What challenges lie ahead for UK’s plan to expand Heathrow Airport?

Britain selected Heathrow Airport’s plan to build a new runway on Tuesday, as the government pushes ahead with the country’s most controversial infrastructure project as part of its drive for growth. But the 33-billion-pound ($43.4 billion) plan for one of the world’s busiest airports faces hurdles before construction can start, including securing development consent and overcoming environmental objections. […]