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Desertification, A Challenge for Science
Desertification is a result of land degradation, mainly caused by human activity, in dry areas of the planet. Climate change amplifies the negative effects of these activities on soils and vegetation.
Vectors and diseases
What do plague, malaria and chikungunya have in common? These diseases and many others - or more precisely the causal agents responsible - are spread by vectors. A vector is a transmission agent. Certain invertebrates - mainly insects - carry microscopic organisms that cause diseases and transmit...