Walking is safe. And,it is said be to as valuable for one's health as more intense forms of exercise like jogging.
VOA: special.2010.06.08
By focusing on renewable energy technologies rather than low carbon energy technologies, the net zero energy building agenda seems morelike an exercise in futility than a serious challenge the risk of catastrophic climate change.
"My fear is that, not just in Northern Ireland but throughout the United Kingdom, the measure will be morelike a branding exercise and good for a soundbite, rather than something that will have any real impact, " he told MPs.