JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


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The nerds have the numbers on precious metals investments on the ASX



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Think it has been debunked? See here.

The Skeptics Handbook II

Climate Money Paper



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Ocean Acidification — a little bit less alkalinity could be a good thing

In Brief: The oceans are not acidic, and will not become acidic in the foreseeable future. Many of the fears and alarming scenarios are based on models. Many scary headlines are based on studies of extreme pH values beyond the range of anything realistic.

Incredibly, hundreds of studies show that for pH changes that we are likely to encounter in the next 100 years, there is arguably a net benefit to underwater life if the oceans became a little less alkaline.

Alarming fears about unrealistic ocean pH’s

“Some ocean pH’s studied were so extreme they are only seen on Star Trek”

Studies of how marine life copes with less alkaline conditions include many experiments with water at pH values in a range beyond anything that is likely on planet Earth — they go beyond the bounds of what’s possible. There are estimates that the pH of the ocean has shifted about 0.1 pH unit in the last 200 years, yet some studies consider the effects of water that is shifted by 2 or even 4 entire pH units. Four pH units means 10,000 fold change in the concentration of hydrogen ions). That’s a shift so [...]

News from the Non Intergovernmental Panel on Climate Change

A sample of recent scientific news from NIPCC * The Glaciers of Greenland were smaller 5000 years ago; * African savanna trees thrive with increases in CO2; * It was hotter in China a thousand years ago, and by a whole degree; * Marine-life-with-shells can’t agree on their favourite CO2 level and * Temperatures make no difference to the 5000 year record of hurricanes. [...]