From the time of Columbus and the Spanish conquistadores, the history of Latin America has been closely entwined with mining. Yet in recent decades, the industry has taken on vast new dimensions, becoming far more powerful and destructive than anything seen in earlier periods. Driven by high mineral prices, mining companies have moved into countries where hitherto they had little or no presence, and ventured into ever more remote and ecologically sensitive areas, such as high up in the Andean cordillera and deep into the Amazon rainforest. This has brought about unprecedented social and environmental changes: entire landscapes have been radically transformed, and lifestyles which have changed little in centuries have, in some cases, disappeared altogether. But as mining has expanded, so has social conflict, with frontline communities mobilizing in defence of their lands, water, livelihoods, and cultures. This resistance has occurred throughout the region and has taken on very different forms: from roadblocks to research; from sabotage to street theatre. While some communities have paid a heavy price for their opposition, others have achieved some impressive victories. The Heart of Our Earth tells their story: how the mining industry has affected them, how they have fought back, and their visions for fairer and more sustainable futures. Written in clear, non-technical language, The Heart of Our Earth is for students, academics, activists, journalists, and anyone who has ever wondered about the true costs of the metals which increasingly power our lives.