Hot Topic

Wind, water and sun are all we need

Bryan Walker Oct 22, 2009

Wind, solar and water sources are sufficient to provide the world’s energy by 2030. Scientific American has a front cover article coming up in November to demonstrate that. Written by Mark Jacobson (left) and Mark Delucchi, it’s heartening information according to a Stanford University report. Turning away from combustion to electricity from renewable sources results [...] … Read More

The cost of losing coral: no drop in the ocean

Bryan Walker Oct 21, 2009

Perhaps it will register if it’s expressed in money terms. The latest issue of the New Scientist carries an article reporting an estimate of  the loss of the world’s coral reefs at $172 billion per year. The estimate comes from the work of Pavan Sukhdev and colleagues. He’s an economist with the United Nations Environment [...] … Read More

Climate Cover-Up

Bryan Walker Oct 18, 2009

“This is a story of betrayal, a story of selfishness, greed, and irresponsibility on an epic scale.” That’s how James Hoggan opens his newly published book Climate Cover-Up: The Crusade to Deny Global Warming. Hoggan initially thought there was a fierce  scientific controversy about climate change. Sensibly he did a lot of reading, only to find [...] … Read More

Fomenting unhappy mischief…

Gareth Renowden Oct 14, 2009

I usually stay out of the fray at NZ’s political blogs, but sometimes it’s impossible to resist a brief plunge into bracing waters. Yesterday, David Farrar at Kiwiblog posted approvingly about the impending launch of a movie called Not Evil, Just Wrong, apparently intended as a counter to Gore’s Inconvenient Truth. Here’s Farrar: The film compares [...] … Read More

Take a giant step

Gareth Renowden Oct 14, 2009

The UK’s Committee on Climate Change, established to advise the British government on emissions targets and to report to Parliament on the progress being made towards achieving those targets, has just published its first annual report: Meeting Carbon Budgets – the need for a step change. It warns that the current rate of emissions reductions, [...] … Read More

Plan B (not from outer space)

Bryan Walker Oct 12, 2009

I hadn’t expected to be doing a Hot Topic review of Lester Brown’s book Plan B 4.0: Mobilizing to Save Civilization, since he writes about a variety of sustainability issues. However the 90 pages or so he devotes to climate change were irresistible for their sensible optimism and I report them here. The Plan B books have [...] … Read More

Deep time, deep water

Gareth Renowden Oct 11, 2009

The last time CO2 hit a sustained level of 400 ppm 15-20 million years ago global average temperatures were 3 – 6ºC warmer than now, and sea level was 25 to 40 m higher, according to research released last week. That’s bad news, because the target for current international negotiations to find a successor to [...] … Read More

Doctors orders: NZ ’must rapidly halve its greenhouse emissions’

Gareth Renowden Oct 09, 2009

In a hard-hitting article in today’s New Zealand Medical Journal, a group of senior health professionals call for NZ to halve its greenhouse gas emissions by 2020. The spokesperson for the recently formed Climate and Health Group, Dr Alex Hamilton says: Climate change has been described as the biggest global health threat of the 21st century, [...] … Read More