SP 500 and Nasdaq Hit Record Closings on AI Optimism Micron Reaches 1 Trillion Milestone African Health Officials Express Alarm as Ebola Treatment Centers Destroyed in Congo Yardeni Warns Fed May Need July Rate Hike to Appease Bond Vigilantes Amid Incoming Chair Warshs Dilemma Restaurants Experiment With PayWhatYouWant Pricing as DiningOut Declines Enphase Energy Shares Surge Following Positive Analyst Coverage from Goldman Sachs Walmarts SafeHaven Status Tested as High Gas Prices Weigh on Shares Workday WDAY Earnings Growth Dynamics Key Drivers and Market Implications