Sport Climbing is a more modern approach that involves using bolts that have been drilled into the rock. These are incredibly strong and hardwearing, enabling many climbers to take big falls with little risk of the protection failing. The bolts are drilled and placed by a person who wishes to make the area more accessible, and remain in place for all climbers afterwards.
Due to its drilled and fixed protection, many regard sport climbing as being safer than Trad. This frees climbers to tackle much more dangerous routes, and psychologically liberates people to take bigger risks and much bigger falls. Also, as much of the protection is already inside the rock when you arrive, it means that people can climb very light, which frees them to climb even harder still. For many the combination of relative safety and simplicity is the appeal of sport climbing, resulting in an exhilarating and physically demanding type of climbing.