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July 17, 2019 Potpourri

Virtual Credit Cards - steve isenbergest 20 min
Upward Bound Videos best is 1st (getting into space) and 2nd (space elevators)22 min, 32 min
Flatland use 1st in list to give overview of concept then discuss6 min
Neil deGrasse Tyson on whether the universe has a purpose min
  • Last modified: 2019.07.15 13:32
  • by smismi7