One in four people in Europe suffer from hay fever, affecting the quality of life of millions. The average cost of hay fever related diseases amounts to around €600 per patient per year from treatment costs and lost time working.
One of the worst offending invasive plants for hay fever sufferers is the North American common ragweed Ambrosia artemisiifolia.
A new report from the IUCN looks at conservation prospects, threats, protection and management of natural World Heritage sites. The IUCN World Heritage Outlook 2 summarises the key trends in the state of conservation of natural World Heritage sites, the threats and pressures they are facing, and the effectiveness of their protection and management. The top three current threats are all areas in which CABI works, with invasive species, climate change and tourism impacts, in that order, being assessed as the most significant threats to natural World Heritage.