The markets are mid-pullback, this August; Wharton Professor Jeremy Siegel offers his perspective on bonds versus stocks, and which investments are the most promising for your portfolio. In Chicago, a tipping battle is underway. Scott Weiner, restaurateur and co-owner of The Fifty/50 Restaurant Group in the windy city, discusses the gratuity quandary–and legal proposal–gripping consumers and the local dining industry. Plus, CNBC’s Jane Wells reports from Palm Springs, where Hurricane Hilary made landfall, and CNBC’s Eunice Yoon reports from Beijing, on China’s latest interest rate cut and the country’s struggling economic recovery.  Jane Wells - 16:24Jeremy Seigel - 20:08Scott Weiner - 30:45 In this episode:Jane Wells, @janewellsEunice Yoon, @onlyyoontvSteve Liesman, @steveliesmanScott Wapner, @ScottWapnerCNBCJoe Kernen, @JoeSquawkKatie Kramer, @Kramer_Katie