Sustainability is a term widely looked for in earth’s science since scientist broke the news on the endangered planet’s health due to pollution and constant rise of the planet’s temperature after the industrial revolution. However, the first signs of a global warming type of news on TV were broadcasted in the 50, but books and magazines have published on climate change since the 1940s (Climate and Man), this means that previous generations have looked into climate change and global warming with concern. Nowadays, scientists, journalists and investigators are not approaching the topic with mere curiosity or slight worry but with alarming attitude towards the possible devastating future we might hold.
Precisely, due to the devastating consequences of global temperature rise, pollution and non-renewable energy sources many scientists, entrepreneurs and green activists have worked to spread the news on stressing the importance of turning towards to renewable energies. The positive aspects of them have been widely discussed and nowadays renewable energies is the sector that has been steadily increasing within the energy industry over the years.
In consequence, renewable energies is a term that has been in vogue for the last 2 decades. To define them simply, they are the counterpart of non-renewable sources embodied in fossil fuel energy, coal energy and petroleum among others. The term renewable is applied due to positive characteristics each of these energies have, they can be replenished during a human’s life time and they do not deplete. In other words, these renewable sources can stand through time because they are a never ending, safer and cleaner energy humans can use while protecting the planet from floods, heat waves and contaminated water.
How can we understand renewable energies source?
To better understand the use of these renewable energies is best to look back at how humans approached different sources of energy prior to industrial revolution. In those days, we have records of two common renewable energies that helped food production. We used to harness hydropower and wind source of energies to facilitate the food production process to be carried out in an easier and faster way.
Nowadays, mankind has put a lot of effort into using technology to find other sources of renewable energies by harnessing the earth’s internal heat, the sun and the plants for instance. This indicates that a common ground for this green option are natural resources such as the sun, the plants, the earth, corn and even the moon. What makes them positive, useful and innovative are the fact that we will not run out of them and their use will not have a negative impact on the planet’s temperature. Another favorable fact is they do not pollute the air, the grounds and the ocean.
On the other hand, it is equally important to weight the challenges renewable sources face every day, the counterpart is that when they are to be deployed at a large scale, they can be low efficient, very expensive and intermittent. For this reason, renewable sources only accounts for 13.5 % of the world’s energy and 22% of the world’s electricity. Even though these challenges are yet to be surpassed, these green options are the fasted growing energy supply on the planet.
The better side of it, accounts for positive and encouraging effects on the planet by saving millions of animal lives and therefore millions of ecosystems will get to be regenerated to the point of having healthier and more food options different from cows and chickens to consume. In addition to it, is crucial to point out that we will be doing a massive damage control to floods, heat waves, food shortage and an putting an end to animal death by starvation.