Run, don't walk, to the nearest magazine vendor carrying the September 2005 edition of Scientific American. (The October issue should be out soon, so go now. We'll wait.) The special issue, entitled "Crossroads for Planet Earth," is the closest one could get to WorldChanging ideas in magazine form without any articles by WorldChanging writers. Topics covered include poverty, public health around the world, biodiversity, efficiency as a source of profit, and prosperity as a function of sustainability. Many of the articles are freely available on the Scientific American website, so if you miss your chance to pick up the issue, all is not lost. But I have to say that this is probably the most impressive copy of Scientific American I've seen in awhile, and I'm very glad I grabbed up the print edition.