Huge areas blackened by coal dust
Newly released ESA images of the Musk crater on Mars show that the pollution has reached unprecedented levels. The pollution is caused by the mining operations of the huge coal deposits.
The coal formed in the crater depression at an earlier time in the history of Mars, when they were filled with shallow lakes teeming with life: this geological era is called the CarbonifAres.
Coal dust created by the mining is being blown far and wide, and is beginning to affect air quality at the nearby Musk Habitat.
The Chinese government has offered its help in tackling the air pollution.