Back Global Warming
The Earth is naturally warmed by rays from the Sun.

Humans produce greenhouse gases by cutting down forests and burning fossil fuels (coal, oil and natural gas) to make electricity.

Scientists believe that as more of these greenhouse gases are put into the Earth’s atmosphere then too much heat will be kept in and global warming will happen.

If the Earth gets hotter:
  • lakes and rivers could dry up;
  • sea levels could rise as ice melts at the poles;
  • animals might die out - like polar bears which live on the ice;
  • there could be more floods, especially on the coasts.