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The world is dependent on a range of different energy sources. Fossil fuels — including natural gas, petroleum and coal–accounted to more than 81 % of all energy consumed in the year 2018. Renewable energy sources such as solar energy, wind power biomass, hydroelectricity, and wind power comprise 14 percent. Nuclear energy accounts for another https://leonardogiombini.it/2019/01/24/da-costruttore-le-biomasse-come-fondazioni 5 percent. Different countries have different energy sources to balance economic needs and environmental concerns.

Energy is found in nature in many forms: sunlight and wind, waves, oceans, and more. These sources of energy can be transformed into more practical energy forms, such as electricity or heat when they are harnessed. When those energies are exhausted, they become non-renewable energy sources.

The environment is harmed by many fossil fuels in addition to other sources of energy that are not renewable. For example, mining for oil can destroy the forests of the planet. Fracking (hydraulic fracturing) can result in earthquakes and water pollution. Carbon dioxide is released when coal is burned which causes global warming.

Fortunately, many of the most promising sources of energy are renewable and sustainable. Wind, solar, and hydropower can generate, for instance electricity without the need to dig for new sources.

Other sources of sustainable energy are emerging, including waves and tidal power. However, to be used on a massive scale, these technologies must have effective distribution networks. This requires the use non-renewable energy sources to construct these networks. In the end, these sources are not yet capable of meeting the majority of our energy requirements. Still, it’s important to keep in mind that costs for renewable energy equipment have come down dramatically over the past few years, and efficiency is increasing rapidly.