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Cannabis

This week, a brief story about the plant, is worth to watch, select captions in your language.

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General

Fossil Fuels

A characteristic that clearly distinguishes man from other animals is his ability to use energy sources other than his own vital energy. As soon as man learned to use and control fire to cook meat, harden his clay pots and melt metals, he began the long chain of using energy sources that allowed him to gradually climb the evolutionary ladder.

Dependence on animal power for transportation persisted well into the Industrial Revolution, just over two centuries ago. As the need for more energy became apparent, other sources such as peat, coal, and finally oil was developed. With the exception of remote regions of the world where the use of energy from animals is still part of their culture, reliance on animal energy has been virtually replaced in industrialised countries by coal, oil, natural gas, and nuclear sources. They provide more than 95% of the energy used in the world today.

With the exception of nuclear energy, all these energy sources are of chemical origin, that is, they are produced as a result of an oxidation-reduction process in the different fuels. The combustion of these primary energy sources is used in various ways. Perhaps the best known are the propulsion of both gasoline and diesel combustion engines and electricity plants.

The practical performance obtainable through these fuels does not even reach 50% of their energy potential stored in the chemical structure. Additionally, inefficient combustion causes costly damage to the environment due to contamination with carbon monoxide and sulphur dioxide, among other dangerous compounds.

Lastly, we must say that oil, coal and natural gas are non-renewable natural resources, which is why it is essential to apply a practical, rapid and really efficient conservation policy to rationally exploit the few deposits that still exist, in order to obtain from them the optimal benefit for future generations.

——————————————————————————————-In the last half-century, large corporations and politics have been in charge of delaying the possibilities of other energy sources such as those from the sun, wind, waves and geothermal heat, we are at the dawn of massive clean energy sources, in a world in which pollution and overpopulation endanger the species itself.

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50 Yeas Later

The following articles will be a series of radio microprograms developed in the seventies as part of my duties as a Chemistry Professor at a Venezuelan University.

Caracas, July 1, 2100. Time: 8 before meridian.

It looks like a splendid spring day with a temperature of 20 degrees centigrade, rising to 25 degrees by noon.

At 10 in the morning and at 4 in the afternoon it will rain for 15 minutes. The weather forecast is infallible. For some years the centre of the city has been covered with light metal and synthetic fibre dome and the climate is regulated by a central station according to the needs of the population.

The sun has risen at seven in the morning… naturally we are talking about the artificial sun, whose energy supply comes from an atomic reactor located in the subsoil.

There are already few people who still remember that time when electricity was obtained from the combustion of oil. For the current inhabitants, that atmosphere contaminated with sulphur dioxide and carbon monoxide is unimaginable.

Today, these invaluable raw materials are transformed, through various chemical combinations, into superior quality products such as artificial fibres, dyes, medicines and proteins.

The factories are located under domes similar to the one that covers the centre of the city. Each one is a closed system that only captures and releases the products it wants. Pollution is a word from the past.

Only express electric trains circulate in the city, the energy comes from fuel cells and on the streets, we only see cars powered by highly efficient electric motors, with light fibre bodies, whose surfaces are used by artists to express their art. 

So or in much the same way we could continue our description of the world tomorrow. A dream? An unrealisable prophecy?

No…..A possible reality. Nothing that we have mentioned here seems impossible to bring to reality, moreover, some of them are already within reach.

Somethings for sure:

“Our world of tomorrow will be a world where science and technology will provide us with a safe change towards the future, since the more complex the problems of society become, the more marked the possible solutions that Science and Technology can offer. ——————————————————————————————–The current world has advanced in geometric progression in terms of technology, but at the same time, and in the same relationship, we have gone backwards in the human part, it is an unsustainable world.