Climate and environmental challenges

Today, we have a better understanding of the origins of climate and environmental disruption, thanks to the work that scientists have carried out over the last few decades. We also have a better understanding of the actions that need to be taken to limit these disruptions. Here are some key figures and links to help you answer any questions that you may have.

key figures

+ 1.5 to 5°C

Since the beginning of the industrial revolution, the global warming caused by human activity is estimated to be 1°C, and the IPCC predicts an increase of between 1.5 and 5°C by the end of the century. It is imperative to limit this increase to 2°C.

90%

If current trend continues, almost 90% of the Earth’s coral reefs could disappear by 2050. This would affect the entire marine ecosystem.

2050

To limit global warming to 1.5°C, greenhouse gas (GHG) emissions need to be reduced to achieve a balance between emissions and absorption by 2050. This is known as carbon neutrality.

69%

Vertebrate populations have already declined by 69% between 1970 and 2018.

If the current rate of GHG emissions continues, this decline could worsen and lead to the extinction of many species by 2050.

1.4 Billion

According to the IPCC, if GHG emissions continue to rise at the current rate, sea levels could rise by 1.1m by 2100, potentially putting more than 1.4 billion people at risk.

1 August 2024

1 August 2024 is known as ‘Overshoot Day’. In just 213 days, we consumed a year’s worth of our planet’s resources. 

In Europe, ‘Overshoot Day’ took place on 3 May 2024.

68%

Although greenhouse gas emissions in Europe fell by 28% between 1990 and 2019, global emissions increased by 68% during this period. 

They continue to rise to this day.

2%

According to the IPCC, agricultural production is set to decline by 2% per decade over the next few years. 

The world’s population increases by 10% per decade.

2 tCO2

To achieve carbon neutrality in France by 2050, we will need to reduce the emissions per person from 10 tCO2/year to less than 2 tCO2/year.

For reference, a return flight from Paris to New York produces around 1 tCO2 per passenger.

resources for videos, articles and files

To help you better understand climate and environmental issues, here are a few articles, videos and files to get you started. You can read more on certain issues using the ‘Further Reading’ section.