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Renewable Energy Sources
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As concerns about climate change grow, many countries are shifting away from fossil fuels towards renewable energy sources. Solar and wind power are currently the fastest-growing options, largely because the cost of the technology has fallen dramatically over the past decade.
Hydropower, generated by the movement of water, remains the largest source of renewable electricity worldwide, though building new dams can have significant effects on local ecosystems. Geothermal energy, which taps heat from beneath the Earth's surface, is less widely used but offers a highly reliable power supply in certain regions.
Despite this progress, renewable sources still face challenges, including the need for better energy storage and upgraded electricity grids. Governments and private companies are investing heavily in research to overcome these obstacles, aiming to make renewable energy the dominant power source within the coming decades.
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Why are solar and wind power growing quickly?