The UN is organizing this week in Paris a second phase of negotiations to reach an international, legally binding treaty against plastic pollution. Le Parisien retraces the "plastic routes" to the oceans and explains the extent of the environmental drama.

The international community is meeting for a second session aimed at finding a global agreement to fight it, from Monday, May 29 to Friday, June 2 in Paris. Eventually, these negotiations could lead to a historic, legal binding treaty to eliminate plastic pollution, the UN says.