MONROVIA, Nov. 23 -- Living without a toilet endangers the health and livelihoods of the world's most vulnerable people - and the risk of living without proper sanitation increases as climate change bites.

WaterAid's briefing Living in a fragile world: The impact of climate change on the sanitation crisis highlights the link between poor sanitation and the transmission of fatal, but preventable illnesses - such as cholera - and examines how these are now compounded by the effects of climate change.

Only 45% of the world's population can rely on safely managed sanitation - that is a toilet serviced to allow human waste to be treated and disposed of safely. A staggering two billion people do not have access to a private toilet, and more tha...