Deep in the reeds: Australian scientists to put dollar figure on floating wetlands' global water quality savings

'We've worked out that no matter how hard you engineer something, nature filters everything much better than anything else', says academicGet our breaking news email, free app or daily news podcastAs the plants are pulled out of one of the cells of their floating pod, the long and thin roots are covered with slime."This is what you want," says Chris Walker, an environmental engineer who is struggling to keep hold of the weight of the clump of reeds. Continue reading...