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Comment Re:The classics (Score 1) 458

Not sure of the age range, but when I was a kid my dad made me what was basically a board with a power source, some lights, switches, and some other odds and ends. It had contacts (bolts) and a bunch of alligator clips for connecting the stuff. I had a lot of fun playing with it, and I've seen commercial versions of this now.. so might be a good idea. Also rates high on the "learning without realizing" category.

They are a good idea, my son has one and loves it!

Comment Re:Politics (Score 1) 874

The desal plants (powered by coal) are an adaptation.

That's (at least partially) incorrect.

AGL has been chosen to provide energy from GreenPower accredited sources in SA to meet 100% of electricity
consumed by the ADP operatons for a 20-year contract period.

FWIW, South Australia is also getting 2 new gas-fired generators on Torrens Island for electricity needs.

Nice tag line though.

Comment Re:Known this for years. (Score 1) 331

My point was that they do this for a very good reason, to prevent the spread of disease. An often quoted figure is ~80% of infections (everywhere, not just in hospitals) are spread because people don't wash their hands, or wash them properly.

http://www.cdc.gov/cleanhands/
http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/Handwashing_why_it's_important?OpenDocument

By washing your hands with just water, you are effectively saying you don't care about this for the people you do come in contact with. And I'm glad you have the ability to differentiate those with weakened immune systems.

Comment Re:nt (Score 2, Informative) 331

His explanation is that soap doesn't just clear away dirt and micro-organisms; it also removes surface skin cells and destroys oils, and this isn't too good for the skin.

Our son used to get skin problems (dry, rashes), we stopped using soap and just went with water and facecloth for shower or bath. Problems gone.

That being said, I work on infection control software and as a result am pretty fussy about washing hands after going to the toilet and before eating meals.

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