An Oxford University trial revealed that Dexamethasone, a common and inexpensive steroid, has been shown to improve survival rates in some Covid-19 patients. CNBC’s Meg Tirrell and Former FDA Commissioner Dr. Scott Gottlieb discuss the significance of this finding and its impact on health workers, global hope, and U.S. markets. CNBC has unveiled its annual list of Disruptors, a group of 50 up-and-coming companies disrupting industries and legacy brands. Number one on the list: payment platform Stripe. CEO John Collison shares how his platform’s been helping businesses stay afloat throughout the pandemic, and how he plans to keep his own business growing.