Ecologist: Three years ago today we first learned of the on-going meltdown at the Fukushima Daiichi nuclear plant. TV screens showed long lens shots of concrete buildings exploding in showers of dust, worsening the burdens of one of Japan's worst natural disasters in recent times. The timing was unfortunate for some - such as the environmental activists who had recently gone 'pro-nuclear' - and that's not to forget one commentator who, remarkably, went pro-nuclear as a direct result of the catastrophe. At...