Author: Dr. John Lienhard

Episode: 1323 Fleming, the light bulb, and the vacuum tube.  Today, an analogy changes our world.

Episode: 1322 Five college degrees in six years: What does it mean?  Today, some thoughts about beating the system.

Episode: 1321 A modern solar collector, a century before its time.  Today, an idea whose time had not yet come.

Episode: 1320 Today, we wonder where to look for our new widget.  Intellectual misdirection: looking inside and outside our heads for knowledge.

Episode: 1319 Vannevar Bush and the great Rockefeller Differential Analyzer.  Today, a eulogy for a machine.

Episode: 1318 Three-field crop rotation and the origins of Western technology.  Today, putting horses to work proves harder than we might think.

Episode: 3305 An inland shipping port expands our vision of seaports.  Today, an inland seaport.

Episode: 1317 The first iron-smelting in Colonial America: Hammersmith on the Saugus.  Today, we smelt the first American iron.

Episode: 1316 Parachutes: for fun or for survival?  Today, let's fall safely out of the sky.

Episode: 1315 Chlorella: the day we decided not to eat algae burgers.  Today, we try to create a new food.