Global warming is the recent rise in the temperature of the world that is happening faster than it ever has before. It is being caused by deforestation and by the burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity, which releases carbon dioxide (CO2), a greenhouse gas.
The problem with global warming is that the countries of the world are not doing enough to stop it. Never before have all countries had to unite and cooperate this way, and many are finding it very difficult. Global warming is getting worse and the only way to stop it is a change from fossil fueled energy to renewable energy. The problem is that this change is happening too slowly.