Learn
The World Issues
To begin
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The UN describes homelessness as a slide in thirteen stages, not as a state.
Source: UN-Habitat, expert group annex
What if the street is only the last step?
Understand homelessness -
In 2024, global temperature went above 1.5 °C.
What if the Paris threshold is measured in decades?
Understand the climate -
According to the WHO, loneliness is linked to 100 deaths an hour.
What if it is a matter of health, not character?
Understand loneliness -
Since 1990: 110 million hectares less primary forest, 120 million more planted forest.
What if more trees does not mean more forest?
Understand deforestation -
The ILO counts 3.8 billion people with no social protection at all.
What if the problem is not the budget, but the margin?
Understand financial hardship -
Among deaths from polluted outdoor air, the WHO counts 68% heart disease and stroke, and 4% lung cancer.
What if it is above all a matter of the heart?
Understand air pollution -
The hunger indicator counts 645 million people. Another, less known, counts 2.1 billion.
What if we are looking at the wrong number?
Understand food security -
A melting glacier gives more water first, then less.
Source: UNESCO and UN-Water, World Water Development Report 2025
What if abundance is the first sign of scarcity?
Understand water -
For the WHO, burnout is not a disease but an occupational phenomenon.
What if we are mixing up anxiety, depression and burnout?
Understand mental health -
About 60% of the material made into clothing is plastic.
Source: UNEP, April 2023
What if the plastic nobody sees is in your wardrobe?
Understand plastic -
Six billion people are online, a record. And the ITU says the divides are widening.
Source: International Telecommunication Union, November 2025
What if the record hides the gap?
Understand the digital divide -
More than half of global GDP depends on nature.
What if the economy depends on what it damages?
Understand wildlife and plants -
A quarter of the world's waste is not even collected.
Source: UNEP, March 2024
What if sorting is not the first question?
Understand waste