Summary: <p>Walmart and Home Depot both reported sales were up 6.5% in the second quarter. While Walmart’s report indicates tough times for lower-income consumers, Home Depot’s shows middle to upper-income ones are feeling pretty good — even if they’re holding off on a new house. Plus: a new leader for Texas’ troubled power grid, dangerous heat for delivery drivers, and a new Florida law could make it harder for professors to retain tenure.</p>
