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A clever and interactive tool that works as a carbon footprint calculator for kids. Quite interesting results, depending on what you choose

Yet another list of iPhone apps to trawl through though this one is perhaps more serious than most as it focusses on things environmental. From the Treehugger group it contains short reviews and links to a range of green apps including carbon calculators, Offset calculators, a range of metering and measuring apps amongst others. Whilst many may be of personal interest there are a number that may be also useful in the classroom context.

"It's as strong as steel and tough as a bulletproof vest, capable of withstanding the same amount of pressure it takes to turn carbon into a diamond. Scientists have discovered nature's newest, strongest material, and it comes from . . . a sea snail."

Now you can ask us to help offset some of those CO2 emissions

Constructivist theories grew out of the work of a couple of Russians around the time of the Russian Revolution. It is radical subjectivism dressed up as science, and has no scientific credibility whatsoever. It is used by radical educators to push their barrow that nothing the teacher knows is worth the student learning and that all knowledge is innate. It's bullsh*t. Theories like this rot are part of the reason that the bottom has dropped out of Western education and we have a generation who can't write. This should be resisted by any educator with an interest in educational excellence.

A world treaty on climate change will be delayed by up to a year and is likely to be watered down because countries with the highest greenhouse gas emissions are refusing to commit to legally binding reductions.

Money invested in protecting nature can bring huge financial returns, according to a major investigation into the costs and benefits of the natural world