Researchers have reconstructed the evolutionary history and global spread of malaria over the past 5,500 years, identifying trade, warfare, and colonialism as major catalysts for its dispersal.
Quito, Dec 23 (EFE).- Business in the Ecuadorian capital this holiday season is registering a slight improvement compared with the pre-Christmas period in 2020, although the coronavirus pandemic and the economic crisis are keeping small businesspeople, who are barely managing to cover their costs, on tenterhooks. Quito’s historic downtown, a World Cultural Heritage Site and …