We previously mentioned that M. Night Shyamalan had signed on to adapt a big screen version of the animated series Avatar: The Last Airbender... presumably an attempt to rebuild some credibility after the critical beating he took over Lady in the Water. Variety now reports that he's also penned an original script with the working title The Green Effect, about "a large-scale, cataclysmic environmental crisis that turns into a struggle by mankind to overcome nature": Shyamalan Reworking The Green Effect. Let's hope it's a return to what he's good at...