Weather analyst Philip Duncan responds to the volleys of vitriol he received after his blog about global warming yesterday.

Weather expert Philip Duncan notes the cold snap embracing the northern hemisphere is making life tough on 'global warming' promoters.

Organic food can now properly be considered an essential rather than a luxury, says the owner of an expanding chain of organic grocery stores.

The noughties were the warmest decade on record in New Zealand, although last year was cooler than average, latest Niwa figures show.

The science going on at AgResearch's new farm at Tokanui may help New Zealand's dairy farms run in a more sustainable fashion.

When I hear the word "crisis" I immediately envisage people with arms out desperately calling for help.

John Key says a binding agreement could be concluded at Mexico's climate change conference, but the negotiating process has to change.

The Copenhagen agreement had been expected to commit countries to deep cuts in carbon emissions. In the end, it fell short.

Many nations fear rising water levels, but the Netherlands already has practical experience.

A deal for rich countries to slash emissions by 80pc by 2050 "falls well short of expectations and aspirations", says NZ's Prime Minister. But Barack Obama hails the 'Copenhagen accord' as a "meaningful and unprecedented breakthrough".

The US and four other countries, including China, reach a climate agreement to reduce and measure emissions reductions. But Barack Obama says a "fundamental deadlock in perspectives" exists with developing nations.

Prime Minister John Key remains hopeful of a deal at Copenhagen but thinks if progress is to be made ambitions may need to lower.