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Wave and tidal power pilot plants have been very costly to build per kW and in the case of wave power have often suffered very high ongoing maintenance costs. This makes the average carbon footprint of current marine (tidal and wave) power nearly 100 times larger than that of wind, with very much higher delivered energy costs.
In October 2011 our little group: Sonia, Craig, Wendy and Richard visited Argentina. We spent two periods of time in Buenos Aires; at the start and at the end of our trip; and we two nights at the Iguassu Falls.
A Radio National discussion (May 29 2015) stated that statistically girls outperform boys academically and referenced research suggesting that this has something to do with working parents:
| Provocative new research suggests that the outcomes for girls and boys can be different when parents go back to work, in particular mothers.
The big question is WHY? |
I've just been reading the news (click here or on the picture below) that Greg Ham of Men at Work has died; possibly by suicide.