"Changes to the environment that are sweeping the planet are bringing about a rise in infectious diseases, the United Nations Environment Programme (Unep) has warned. Loss of forests; the building of roads and dams; urban growth; the clearing of natural habitats for agriculture; mining; and pollution of coastal waters are promoting conditions under which new and old pathogens can thrive, according to research published today in Unep's Global Environment Outlook Year Book for 2004/2005." More...