In the shadows of Python Cave, Uganda, a leopard leaps from a guano mound—formed by bat excrement—and sinks its teeth into a ...

5 fast facts about human evolution Humans and chimpanzees shared an ancestor 7 million years ago. All humans today are descended from people who evolved in Africa. Evolving to walk on two feet has ...

If the virus not only replicates but also manages to spread, human to human, among a few dozen other individuals, that’s an outbreak. If it sweeps through a community or a country, that’s an ...

A deadly cousin of Ebola, Marburg virus can kill between a quarter and 90 per cent of the people it infects. International travel has taken it from Africa to Europe twice in the past 40 years.

Figure 3. Marburg hemorrhagic fever pathogenesis model. Primary targets cells for Marburg virus infection are macrophages and dendritic cells. In dendritic cells, infection leads to 'paralysis' of ...