Globally, emissions of greenhouse gases are rising at a rate higher than predicted.
Greenhouse gas emissions can be reduced simply by changing our lifestyles. The best way to start is by making our own homes more energy efficient and reducing the use of chemicals that contribute to global warming. Climate change is a long-term change in the average weather patterns on Earth. These changes can be local, regional, or global, and they can cause a variety of observed effects. Since the middle of the 20th century, the climate has been changing because of human activities. Burning fossil fuels increases the amount of greenhouse gases in the atmosphere, which causes the Earth's average surface temperature to rise. There are also natural processes that can contribute to climate change, but they have been overwhelmed by human activities. These include internal variability and external forcings. There is growing evidence that the Earth is getting warmer. This is due to the increasing levels of greenhouse gases in the atmosphere, which trap heat and cause the Earth's a