Discover the safest cities in the world: Tokyo is still number one

The Economist Intelligence Unit study looks at the changes under way in the world’s largest cities

Lake Mead: size, capacity and evolution of the artificial lake near Las Vegas

Last year, 7.5 million people visited the national park by the lake

Which is the biggest and the busiest airport in the world? Here is our ranking

Here is a list of the biggest airports in the world by size and passenger traffic.

Australia: new investments needed for future growth

A national infrastructure audit emphasises the need to investment in order for transport networks to keep up with population growth

Copenhagen’s driverless metro: the inauguration of a new line

After eight years of construction work, Denmark’s capital unveils its new driverless subway line

Tokyo is undergoing a renewal

The city is undergoing major changes to its skyline with the construction of the tallest skyscraper, an urban renewal project and preparations for the Olympics

Tokyo is undergoing a renewal

The city is undergoing major changes to its skyline with the construction of the tallest skyscraper, an urban renewal project and preparations for the Olympics

Shinkansen trains in Texas

Japanese train technology is ready to race along a new line in Texas

High speed rail links remain a mirage for US passengers

From California to Texas, the United States is aiming to build high speed rail links