European critical loads: database, biodiversity and ecosystems at risk Approximately 79 percent of the nature reserves (Natura 2000 areas) in EU countries are estimated to be exposed to an excess of nitrogen deposition in 2020.
Infection risks of manure unclear A literature review by RIVM shows that little to no research has been done on the possible infectious risks of manure.
Further research into hazards posed by e-cigarettes Safety of nicotine-containing electronic cigarettes (e-cigarettes) cannot be confirmed because of the limited amount of published research in this area.