THIS month Jennifer Balch will head into the Amazon rainforest of Mato Grosso state, in Brazil.She intends to set fire to it and find out what happens.

• 珍妮弗-巴尔什这个月即将深入巴西马托格罗索州的亚马逊雨林，她打算在那来一场人工火灾，然后看看会发生什么。