The Amazon rainforest may be able to survive long-term drought caused by climate change, but adjusting to a drier, warmer world would exact a heavy toll, according to new research in which Cardiff University played a role. The findings show adapting to the effects of climate change could see some parts of the Amazon rainforest lose many of its largest trees, releasing carbon stored in them to the air, and reducing the rainforest’s carbon sink capacity. Parts of the Amazon are expected to become drier and warmer as the climate changes, but long-term effects on the region’s rainforests – which span more than 2 million square miles – are poorly understood. Previous research has raised concerns that a combination of severe warming and drying, together with deforestation, could lead to lush rainforest degrading to a sparser forest or even savanna.