With the rise in the population in the world today, one of the most pressing issues being faced by societies is regarding energy sources. With more and more people adding to world’s population every second, there’s a tendency that environmental resources would somehow diminish in the near future. Before, when the world wasn’t as much populated as today, people had no problem looking for sources of energy. There’s always coal mining and also oil for fuel. But, as times passed by, these resources seem to be on a verge of depletion. They are non-renewable sources of energy, after all.
So, what is man supposed to do? Look for alternative sources of energy, of course. News nowadays tend to show various inventions that employ various natural sources, like using water to power machines or using wind to generate electricity. However, what seems amazing to me is that a lot of people today are still trying to rack their brains on how is it possible to use these resources to generate energy. Ladies and gentlemen, this is what we call Green energy or Renewable energy. These resources are called “green” or “renewable” for a reason. They are aptly called green energy simply because they come naturally from the environment. Simple, yes? These include sunlight/ sun, water, tides, waves, biomass / biofuel, wind and geothermal energy.
They are also called renewable energy, because, unlike oil or coal, these energy sources are seemingly endless. There is basically no need to refill them every few hours and are pretty much still available to your children and your children’s children in the future. Let’s face it, it’s not like you’re going to run out of wind, right?
Using renewable energy isn’t really new to our civilization. Truth be told, they have been used since 790,000 years ago. Our ancestors first depended on biomass (resource from organisms) as an energy source, such as burning wood for heat. Soon after, our ancestors started using other green resources such as the wind to help move their ships across rivers and seas (engines haven’t been invented yet).
However, as usage of coal and oil for fuel became more widespread, most of the technologies developed are dedicated to the improvement of equipment used to obtain these resources. The sad part about this is that the gathering of these resources costs the environment dearly. Clearing of trees to make way for mining sites and pollution are some of the results of harnessing these resources. It also must be noted that these resources are not renewable.
Today, more and more environmentalists encourage people to turn to environmental-friendly ways to obtain energy and science took the challenge seriously by developing modern equipment to harness renewable sources of energy, such as wind turbines for converting wind energy into electricity and solar panels to harness energy from the sun. All these equipment are used to supplement the depleting energy sources of countries and also aid the environment in return.