2003-Cambridge University - U.K. English Proficiency Certification - Council of Europe and UK National Qualifications Framework.
2000-Economics For Business - Cornell University, New York, USA.
2000- Honor and Study Achievement Certificate -Cornell University, N.Y., USA.
1999-Business Management Professional Certificate - Cornell University, N.Y., USA.
I write about modern Economics; the environment, History, Geology, Technology, The U.S. National Parks, etc.
Where to find Jack Martinez online
The Lioness in the wilderness
It is quite difficult to write about the mountain lion, because it is at the top of the Eco-chain, and it is a blood-thirsty merciless killer. But, anyone that writes about the Grand Canyon’s wildlife must face it, like it or not. This is about nature and survival, and man also had to fight all kinds of ferocious beasts in order to make it to the present.
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