The dates are even earlier if you're looking at sending packages overseas or to Alaska or Hawaii or members of the military. You can check those dates outhere. Bottom line, based on my experience with the United States Postal Service here in West Central Missouri, get those Christmas cards,...
the Mars Helicopter had to prove that big things could come in small packages. The result of the team’s four years of design, testing and redesign weighs in at little under four pounds (1.8 kilograms). Its fuselage is about the size of a softball, and its twin, counter...