Campaigns against gold mining practices and an effort to link diamonds with the eviction of bushmen in Botswana are heating up again this fall. This time, activists are enlisting the aid of celebrities to join their causes. Oxfam America's "No Dirty Gold" campaign, which questions the gold industry's human rights and environmental record in Africa, is urging Alicia Keys to stop promoting gold sourced from Africa. [also refers to De Beers]