01:15
Sunk Costs - Construction Example
02:56
Excel - Sorting Data
Sorting data in Excel.
03:52
Costs, Production and Industry Structure -…
Costs, Production and Industry Structure - Technology and the Cost of Production
14:55
Susan Solomon: The promise of research with stem…
Susan Solomon: The promise of research with stem cells
Calling them "our bodies' own repair kits," Susan Solomon advocates research using lab-grown stem cells. By growing individual pluripotent stem cell lines, her team creates testbeds…
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