A nanoscale train set powered by microscopic motors and controlled by DNA has been developed by scientists.
The world number two is unhappy at the ban for Viktor Troicki
Juan Martin del Potro has never quite rescaled the heights he climbed with his 2009 US Open victory, but the 25-year-old Argentinian underlined here yesterday how close he is to breaking back into the elite group of players who have monopolised the sport's major honours in the last four years.
Rafael Nadal and Novak Djokovic are only one win away from the 39th meeting of their careers – but the world’s top two were made to work hard before booking their places in the semi-finals of the Shanghai Rolex Masters here yesterday.
British number one dropped just six games in straight sets win
The British number one will play 16-year-old Borna Coric
After battling to break even on the unglamorous and sometimes corrupt ITF Circuit, the rarefied air of Flushing Meadows is a welcome change for the young British ace
Victoria Azarenka took the women's title in the US Open warm-up event
The Spaniard looks back to his best after seven months out injured and is strong favourite to win another French Open title
Spaniard reveals big cut in practice routine as he targets an eighth Roland Garros title
As a player he had been a deft serve-and-volleyer who climbed as high as No 34 in the world
Rafael Nadal won his fifth title this year to continue his run of good form at the Madrid Masters
British number one was below par against Irina-Camelia Begu
There have been calls for tougher measures
It has been nine months since the Fab Four last performed together but Novak Djokovic, Roger Federer, Andy Murray and Rafael Nadal will finally share the same stage again this week. Since they last appeared together in the same tournament, at Wimbledon last summer, the game's four biggest names have taken widely different routes to the Indian Wells Masters, where the top seeds will enter the fray next weekend.
Scot takes five weeks off from competition to work with Lendl after Australian final defeat