Scientists have succeeded in making sperm from human skin, giving infertile men a shot at fathering children that are genetically their own.

Local clean technology developer LanzaTech will be recognised by the World Economic Forum as an "industry-changing company with the potential to transform the future of business and society...

John Clarke gives his spin on London's Olympics.

Locals have criticised the response to last night's Tongariro eruption as too slow but authorities have defended their procedures, saying they quickly established there was no immediate risk and put plans in place.

Rotoaira local David Bennett was concerned by the lack of communication between the authorities and National Park residents when Mt Tongariro erupted about 4km from his home last night.

The aviation colour code around Mt Tongariro has been downgraded from red to orange, but the volcanic alert level remains at 2.

Eruption activity has subsided but another eruption could occur at any time with little or no warning, according to Civil Defence. Read the latest.

News of Tongariro's eruption sparked a flurry of activity by Kiwis who have been awake into the early morning.