Author Archives: pragwater

About pragwater

Eric Harmsen is a professor at the University of Puerto Rico-Mayaguez Campus, Dept. of Agricultural and Biosystems Engineering. He teaches courses in agricultural hydrology, agroclimatology and irrigation. His research interests include: Measurement and modeling all components of the hydrologic cycle, remote sensing of water and energy balance in the Tropics, and agroclimatology.

What Causes Famine?


What Causes Famine? It doesn’t take a Mao or a Stalin. Good article on the possibility of climate change-induced famine:  Click Here  We in Puerto Rico should be very concerned about famine in other parts of the world, since 80% of our … Continue reading

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Years of Living Dangerously Premiere Full Episode


This is the first episode of a series on climate change produced by ShowTime. Excellent! P.S. PR friends: The evangelical climate scientist, Katherine Hayhoe, interviewed in this episode, provided the global climate data used in a recently published study on … Continue reading

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The Rural Women Solar Engineers of Africa-Latest


Prepare to have your mind blown.

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The extreme inefficiency of our agricultural production.


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Cultivo de Arroz en Puerto Rico: El Renacer de una Empresa Agrícola


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Taller de Riego, Fortuna, Puerto Rico, Marzo 12, 2014


Presentations: Planificación de riego para ahorrar dinero, agua y energía Eric Harmsen, Professor, Department of Agricultural and Biosystems Engineering, University of Puerto Rico-Mayaguez Campus.  Email: eric.harmsen@upr.edu Presentation PDF Diseño Preliminar de sistemas de riego por goteo Ing. Eric Irizarry, Agricultural Engineering … Continue reading

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Coloquio Agroambiental – Ciclo de Conferencias Feb – Mayo 2014


  Click Here to view the video series.  

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PR remains on SpaceX’s launch radar


PR remains on SpaceX’s launch radar Puerto Rico could still land a planned private rocket launchpad that would give a lift to the lagging local economy and make the island a player in a bold new industry that is starting … Continue reading

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Fireplace Video (5+ hours)


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Outer world can teach us how to grow spiritually


Green and living trees can absorb the bounty of the sun; dead roots and withered branches are destroyed by it. Therefore, man must seek capacity and develop readiness. As long as he lacks susceptibility to divine influences, he is incapable … Continue reading

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