Chlorine is the main destroyer of the ozone layer. Although its concentration levels showed some signs of decreasing over a twenty-year period, levels have unexpectedly risen in the Northern hemisphere. This observation is the subject of an article published in Nature magazine.

Through this century, tens of millions of people will have to face increased coastal floodings. Even if there is still a great deal of uncertainty regarding the extent of the rise in sea level as a result of global warming, building dykes will cost less than repairing likely damage.

Isoprene and methanol are, among others, volatile organic compounds that are naturally released into the environment by plants. But what role do they play in atmospheric pollution and climate change?

The risk of flooding along the river Meuse in Wallonia will increase between now and 2100, accompanied by increased vulnerability of flood-risk areas due to increased urbanization. A major rethink of land development policy is urgently required.

Is the use of certain plants to extract heavy metals from polluted soils a good practice?  And what if some of the trees recommended for this purpose prove to be intolerant to these heavy metals in the long term?