The music band Coldplay is taking actions to protect the environment. This includes using their fans' energy to help provide electricity for their performances. In this way, they use electricity without adding carbon gases (碳气体) to the air. The band hopes to cut the amount of CO₂ given out by its business activities by 50 percent.

The Coldplay stars have added special dance floors and energy-storing bicycles to their latest world tour performance. The purpose is to get fans to help produce electricity by dancing and riding. Each dance floor can support many people. It creates electricity when people move on it. Each of the bikes can create an average of 200 watts (瓦特) of electricity. In order to encourage fans to dance or ride more during the performance, they even have competitions to find out which group of fans can create the most electricity. 

"Being green is a good business model. That's what we'd like to show," said Coldplay lead singer Chris Martin. "The changes will bring a sense of belonging to the fans. Everything in our show is planned to bring everyone into the same group, singing together. It makes us feel part of a community."

Coldplay has taken other steps to protect the environment. One of its tour stages (舞台) uses recycled steel. The band also hopes to set up the world's first tour battery (电池) system, made from 40 recycled electric car batteries. The hope is to power the whole show with batteries.

"It's very expensive to try these things for the first time," said Martin, "but we are very happy that we are changing."

Coldplay is just one music group working to help the environment. Some other famous bands are also taking such steps.