Wood and charcoal burning is still the main energy source for about 30 percent of the world's population.

Name: Wood and charcoal burning is still the main energy source for about 30 percent of the world's population.
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Wood and charcoal are primary sources of energy for cooking and heating for about 2.4 billion people around the world, especially in rural areas and developing countries, making up roughly 30% of the global population.

Wood and Charcoal Burning Is Still the Main Energy Source