Breakthrough Covid, Mystery Bird Disease, Olympic Gold and USA Gymnastics

Founder of Sports Medicine Analytics Research Team Dr. Robby Sikka discusses what’s driving most of the breakthrough Covid cases he’s studied. CNBC’s Valerie Castro speaks to wildlife experts to learn more about the mysterious disease that’s killing birds on the east coast. “Squawk Box” co-host Andrew Ross Sorkin helps us make sense of Robinhood’s IPO today. Scientist Michael Mann explains “Earth Overshoot Day” and how climate change is manifesting itself across the globe. Plus, USA Gymnastics Hall of Famer Carly Patterson reacts to Suni Lee’s impressive gold medal performance.