Tag Archives: environment

Australia could be powered by waves

45,000 gigawatt-hours/year could be generated by wave power

Just how much electricity is this and where does this number come from? Doing some simple arithmetic we get:

1000 watt-hours is 1 unit of electricity as billed by utilities which is one kilowatt-hour (kWh)

45,000 gigawatt-hours = 45,000,000,000,000 Watt-hours (Wh). The average Australian household uses 16 kilowatt-hours (kWh) per day. If the number of households is 8.1 million. 16Kwh multiplied by 8.1 million is 129,600,000 kWh which is 129,600 mWh. This figure is per day, so we multiply by 365 to get 47 304 000 000 mWh per year, or 47,304 gWh per year. So our answer a little larger than the 45,000 gWh, but not too bad for an estimate.

Incidentally, the 16 kWh per day is about 480 kWh per month which comes to 5,840 kWh or 5.8 mWh per year. It might be useful to look at your energy bills and see how you could reduce your consumption.

Save Money on Energy and Electricity

Beijing Traffic Jam is 100km long

This article has the distance as 62 miles. A quick conversion gets a better round number.
Beijing traffic jam 100 km long

Cities are Bad for Us – Parks and Gardens can Help

How the city hurts your brain

A selection of great city gardens:

London > Kensington Gardens >St James Park >Hyde Park

Paris > Many to choose from

New York > Central Park

Singapore > Singapore Botanic Gardens

Melbourne > Royal Botanic Gardens

What are the health and environmental impacts of deodorants?


Deodorants may be bad for you and the planet

Today’s Hot Topic? Bottled Water

The following reflects a hot American summer. Regardless, millions drink bottled water everyday. Have you noticed that “Evian” is “naivE” backwards?

http://scienceblogs.com/highlyallochthonous/2010/07/todays_hot_topic_bottled_water.php