With rhinoceros poaching in Africa approaching an all-time high, one nature preserve owner has had enough. Ed Hern, owner of the Rhino and Lion Nature Reserve near Johannesburg, South Africa, is experimenting with injecting cyanide into his rhinos' horns. He believes the poison will not harm the rhinos, because there are no blood vessels in the horn to carry the poison the rest of the rhino's body. But if anyone kills the animals and sells the horns for use in traditional Asian medicine, the end-consumer could pay the ultimate price.

"The aim would be to kill, or make seriously ill anyone who consumes the horn," Hern told Sky News. He also hopes this could help disrupt the market for illegal rhino horns. "If someone in China eats it and gets violently sick, they are not going to buy it again," he said.

The UN has declared that access to clean water and sanitation is a fundamental human right.

About 1.5m children under five die each year from water and sanitation-related diseases.

The resolution was passed with 122 nations in favour, none against and 41 abstentions.

Abstaining countries said the resolution could undermine a process in the UN's Human Rights Council in Geneva to build a consensus on water rights.

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