https://apnews.com/12b42f57c14a3e84ffaf257415090df8 > BELGRADE, Serbia (AP) — Several thousand people protested in Serbia on Saturday demanding a ban on planned lithium mining in the Balkan country as well as a resolution to scores of other environmental issues that made the region one of the most polluted in Europe. > The rally in downtown Belgrade was organized by about 30 ecological groups who recently gained popularity in Serbia amid widespread disillusionment with mainstream politicians and amid major pollution problems facing the region.