Dediu Newsletter Vol. 3, N. 4 (28), 6 March 2019 : Derc Publishing House : 9781939757869 : 193975786X : 04 Mar 2019 : February 2019, with only 28 days, did not disappoint us: broadcaster CBS charged a base price of about $5.25 M per 30-second commercial during the Super Bowl, the U.S. national debt has passed a new milestone, topping $22 T for the first time, researchers found that a graphene biosensor offers early lung cancer diagnosis, Amazon is acquiring home Wi-Fi company Eero, a developer of easily connected home internet routers, Google signs lease with Boston Properties for more Cambridge, MA, space, and an engineer created gloves that turn sign language into audible speech.In this 4th newsletter of the third volume, the 28th in total, we included the most relevant news, in a balanced approach, usually directly from the source, to help the general public better understand the realities around us. We included also several nice photos - I thank my wife for her photo assistance. Be