- The concentration of carbon dioxide has raised to 400 ppm (parts per million), a record that has never been estimated for hundreds thousands years. This caused an increasing of temperature and an acidification of oceans.
- Human activities had a significant role in the greenhouse effect. Anyway, we hope half of electricity will be obtained from renewable sources by 2040.
- China, European Union and USA found an agreement to lower the CO2 emissions. It is now possible to stop projects based on fossil fuels.
- Many countries promised to lower CO2 emissions of 11 billion of tons of greenhouse gases by 2030. However, the way is still long.
- Researchers are working on different methods for absorbing CO2 from our atmosphere. Everybody hopes that CO2 concentration will be soon under 400 ppm.
Here you will find 4 questions about this text (By Michele Bellucci, Ahlam Er Rabeh and Silvia Ventanni)
eTwinning project "Funology in Science"