Can we stop burning fossil fuels? Across Europe, and from California to China, temperatures are rising during a long heatwave.
Thousands flee as Greece goes up in flames

Glossary
Greece - A country in southeastern Europe with a population of more than 10 million.
Heatwave - A period of abnormally hot weather.
Extreme - Very great, or beyond what is expected.
Sicily - The largest island in the Mediterranean. It is part of Italy.
Europe - The second-smallest of the world's continents. It has a population of 746 million.
Climate change - Long-term shifts in temperatures and weather patterns. Human action is a major cause of climate change.
Fossil fuels - Fuels made from decomposing plants and animals, including coal, natural gas and oil. These fuels release carbon dioxide, causing global warming.
Global warming - The Earth is getting hotter due to climate change.
Solar - To do with the sun.