Tag Archives: global warming
For his fans, he’s more of the all-dancing, all-singing Richard Alley:
Researchers at Bristol University are investigating the possibility that developing crop plants, such as wheat, with broad shiny leaves could reflect a substantial amount of sunlight and help to reduce global warming.
An analysis by atmospheric scientists at Stanford University in Palo Alto, California, has shown that, in the Arctic, aircraft vapour trails have caused 15–20% of surface warming. Globally, commercial aircraft vapour trails have been responsible for 4–8% of surface warming since records began in 1850 – equivalent to a temperature increase of 0.03–0.06°C. Previously, it had been assumed that the impact of aircraft emissions was the same everywhere. The new analysis, led by Mark Jacobson, a professor of civil and environmental engineering at Stanford, reveals that aircraft emissions increase the fraction of cirrus clouds where vapour trails are most abundant … Continue Reading
According to scientists at Luleå University of Technology in Sweden, attempting to tackle global warming by capturing carbon dioxide or switching to nuclear power will not work because a large part of the warming results from the heat produced by industrial processes rather than the greenhouse effect. In a paper published in the International Journal of Global Warming, Bo Nordell and Bruno Gervet have calculated the total energy emissions from the start of large-scale industrialisation in the 1880s to the modern day They point out that net heat emissions during that time account for almost three quarters of the global … Continue Reading
British researchers, writing in the Current Biology journal, say that growing crop varieties that reflect more sunlight into space could cool much of Europe, North America and parts of North Asia by up to one degree Celsius during the summer growing season. "We found that different varieties of most food crops do differ in how much solar energy is reflected back to space," said Andy who led the study. "The more energy you reflect back to space the cooler the air temperatures will be." Previous research has shown that wheat, maize, barley and sorghum reflect solar energy differently, depending on … Continue Reading
Australia’s "60 Minutes" has broadcast an item called "Crunch Time" which made much of the opinions of David Evans, a computer programmer with a PhD in electrical engineering who once worked on a mathematical modeling program for the Australian Greenhouse Office. Dr Evans put two arguments to support his view that global warming is not caused by carbon emissions. Dr Evans first point was that, although carbon emissions have continued to increase, global temperatures have not increased for the last eight years. Here is the graph of global temperatures from the UK Met. Office’s Hadley Centre. It’s difficult to see … Continue Reading
Many climate change campaigns have used the dramatic photographs of the diminishing snow of Kilamanjara as evidence of global warming. In fact, the snows have been retreating for decades – perhaps centuries. The real reason for the diminishing snows is deforestation at the base of the mountain. This has resulted in less moisture in the air around the mountain and, consequently, in less snow falling on the peak. Of course, the fact that diminishing snows on Kilamanjaro is not the result of global warming is no evidence that global warming is not real. Photos taken on Feb 17 1993 and … Continue Reading
Climate Change Slideshows seem to fashionable. Here’s mine (developed in conjunction with GoBizGreen):
Videos
Renewables News- New Aussie Technology to Clean Polluted WaterScientists from Deakin University, together with French colleagues, say that they have manufactured a lightweight and reusable material that can absorb up to 33 times its weight in a wide range of spilt oils, chemical solvents and dyes, while repelling … Continue Reading → […]
- Aussie Researchers Make Efficient Solar Cells from Low-grade SiliconResearchers at the University of New South Wales have found a way to make very high efficiency solar cells out of cheap, low-grade silicon. It has been known for several decades that hydrogen atoms can be introduced into the atomic … Continue Reading → […]
- First Aussie “Hot Rocks” Power Plant Begins ProducingThe first power plant in Australia to produce electricity using an enhanced geothermal ("hot rocks") system has begun producing electricity in the far north-east of South Australia. The one-megawatt Habanero pilot plant near outback Innamincka is operated by Geodynamics. Geodynamics … Continue Reading → […]
- New Aussie Technology to Clean Polluted Water
