Sustained levels of moderate warming could melt the East Antarctic Ice Sheet, possibly contributing to up to 19m of sea level rise, researchers, including one from Otago University, say.
Melting ice caps, floods, droughts . . . concerned? As the clock ticks down on the Government's Zero Carbon Bill consultation, now's the time to let them know, writes Tom McKinlay.
Two main methods of controlling greenhouse gas emissions from human activities, using price signals, are being debated in NZ; carbon "fee and dividend" or "cap-and-trade" using an emissions trading scheme.
The Wise Response Society - a coalition of academics, engineers, lawyers, artists, sports people and others - believes the target in the Zero Carbon Bill must be to reduce net emissions across all greenhouse gases to zero by 2050.
High water temperatures could trigger a massive toxic algal bloom in Otago Harbour, decimating aquatic life, a marine ecologist has warned.
The Government has been urged to get tough on climate change in an open letter signed by groups ranging from Sanford and The Warehouse Group to the New Zealand Nurses Organisation and Wellington Zoo.
Because methane is a less persistent greenhouse gas, it has been regarded as a lesser evil. That calculation may need to be reassessed, Colin Campbell-Hunt writes.
It's crunch time for climate change but the memo does not appear to have reached the Government, writes Tom McKinlay.
New Zealand is unprepared for sea level rises of half a metre by the end of the century that could turn 1-in-100 year flooding events into annual occurrences, an extensive United Nations report on climate change has revealed today.
Scientist and historian Naomi Oreskes is looking for new ways to explain the urgent threat posed by global warming, writes Tom McKinlay.
Campaign strategist James Carville coined the phrase ''It's the economy, stupid'' to focus the attention of campaign workers on the one key issue that would get Bill Clinton elected president in the 1992 US election.
Out in the oceans, climate change is pushing marine chemistry towards a critical trigger point, reports Tom McKinlay.
The time is ripe for a Dunedin energy plan. But will the crucial consensus and support be there to give it wings? Bruce Munro takes a look.
New Zealand should ''take some leadership'' over climate change issues, American environmentalist and climate change campaigner Bill McKibben urged in Dunedin yesterday.
One of the prophets of global warming visits Dunedin this week, and you can be assured the message will be chilling, reports Tom McKinlay
A melt of ice on Greenland and Antarctica is likely to be less severe than expected this century, limiting sea level rise to a maximum of 69 cm, an international study said today.
Individuals need to take action and use their citizenship rights to put pressure on the Government to act on climate change, Victoria University School of Government professor Jonathan Boston says.
Global warming sceptic Lord Christopher Monckton, who will speak in Dunedin next Tuesday, responds to claims made about him.
It is in New Zealand's best interests to know much more about how climate change is affecting the Antarctic, University of Otago Prof Gary Wilson says.
A leading global warming sceptic, Lord Christopher Monckton, will speak in Dunedin next month. His visit is part of a national ''Climate Freedom Tour'' and will include a lunch and an evening function on April 23.