The man-made brush fires that are raging again in Indonesia are symptomatic of a wider regional peril: South-East Asia's rapid development is racking up an alarming toll in environmental destruction. Pick almost any environmental topic, from urban pollution to deforestation, and South-East Asia has a track record that is among the world's worst. The result eventually could derail the region's hope to achieve sustainable development and cause immeasurable global harm, ecologists say.