Interactive

They cost billions of dollars, symbolise economic power and are photographed by millions, but the world’s tallest buildings also compete on a lesser known measure that pushes the limits of modern engineering: elevator speed. These ultra-fast lifts can reach speeds of 20 metres per second (45 mph) and feature technologies that use heat resistant brakes, mitigate excess vibration and adjust for air pressure to prevent ear blockages. Our graphic shows the top speeds of elevators in eight of the world’s tallest and most famous buildings, and how far they have traveled since this web page loaded Read more

By John Burn-Murdoch and Gavin Jackson

In the latest instalment of The Baseline, our weekly feature on sports statistics, we looked ahead to the ATP Tour Finals, the climax of the men’s tennis season.

The tournament is played on a hard court surface, which goes some way to nullifying the relative advantages afforded to big serving and big returning players by grass and clay courts respectively. But where exactly does hard court fall between those two extremes, and what can this tell us about its impact on the playing styles of grass and clay specialists? Read more

Our new unemployment tracker shows the latest jobs data across the European Union, including top-line figures for each country’s constituent regions. The most recent figures are for September 2014.

You can also download the latest data using the link beneath the graphic. Read more

US broadband map

FT analysis of new Census Bureau data shows the scale of the task facing the Obama administration Read more

The world’s population is changing in ways that could barely be imagined a generation ago, and at a pace that is faster than any in recorded history. Not only are we all living longer, but in the richest countries – and in many newly middle class nations – people are having too few babies to keep population stable. By 2050, according to UN projections, those aged over 65 will outnumber children aged 5 and under, for the first time in human history. Read more

FT Baseline

Between them Barcelona’s Lionel Messi and Real Madrid’s Cristiano Ronaldo have scored more than 300 league goals in the last four seasons of Spain’s La Liga, but which player provides more goals for their team? Read more