Sweeping warms up the ice and reduces friction, which makes the rock curl less and therefore move straighter.
Source: Why curlers sweep the ice – Business Insider
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Premier League welcome new clubs for 2017/18
Presence of Newcastle, Brighton and Huddersfield to be confirmed as new campaign officially begins today
Circuit Red Bull Ring – Red Bull Ring – Wikipedia
Austrian Grand Prix Track
Drag reduction system – Wikipedia
The Drag Reduction System (or DRS) is a form of driver-adjustable bodywork aimed at reducing aerodynamic drag in order to increase top speed and promote overtaking in motor racing. It is an adjustable rear wing of the car, which moves in response to driver commands.[1] DRS often comes with conditions, such as the pursuing car must be within a second (when both cars cross the detection point) for DRS to be activated.
