Biodiversity refers to all varieties of life that can be found on Earth:
- all living species (plants, fungi, micro-organisms, animals, including of course humans);
- their genes, which guarantee diversity within species;
- their ecosystems, i.e. the way in which living organisms interact with their surroundings and form a specific environment, such as forests, deserts, wetlands and coral reefs, etc.
Biodiversity represents an incommensurable wealth. According to a realistic estimate, there would be 15 million species living on Earth.
Today, biodiversity is undermined. Over the past 50 years, biodiversity loss has been faster than during all other periods of human history. And this trend is only growing. Since biodiversity is the basis of all life on our planet, preserving it has become a fundamental issue that concerns us all.