Thirty cavers have set off on a 17-day expedition in hope of extending the country's longest cave to make it the longest in the Southern Hempishere. Cave diver Kieran Mackay discusses exactly what it will entail.

New Zealand cricket selector Gavin Larsen speaks to Alex Perrottet about the Black Caps' performance against the West Indies and what might come against the series with Pakistan.

Some retailers are opting to get rid of straws or offering biodegradable ones after their plastic counterparts pollute coastlines and take up to 200 years to break down, Nita Blake-Persen reports.

A group of Christchurch inmates are running their very first marathon today. Corrections officer Gary Smallridge says they're looking "fresh as daisies". He spoke to Summer Report just as he was making his way to the start line.

The coal industry is clawing its way back from the doldrums after the collapse of Solid Energy. Gold mining is prospering in the North Island at least - and could expand further. Undersea mining is also pushing itself forwards. But opponents of mining insist it damages the ecosystem and in the case of coal, the larger environment.

Despite not bordering the Pacific or being anywhere near it, there are reports Britain is exploring the option of joining the Trans Pacific Partnership or TPP.

RNZ's Maori Affairs Correspondent Mihingarangi Forbes gives Summer Report presenter Alex Perrottet some much-needed help with his te reo.

Summer report speaks to Commonwealth Games hopefuls who are spending their summer holiday training. First Sally Murphy went to meet boxer Alexis Pritchard.

Auckland housing market better for buyers than sellers for the first time in seven years.

The US president Donald Trump has distanced himself from former aid Steve Bannon after Mr Bannon was quoted in a new book describing a meeting between Mr Trump's son and a group of Russians as "treasonous". US correspondent Simon Marks discusses the latest news out of the White House.