Monday, 14 June 2010

Electric lighting causes cancer

"The advent of electric lighting at night is one of the major reasons why the cancer rate has increased substantially during the last 100 years. The reason for this -melatonin. This hormone, which puts us to sleep, is a powerful anti-oxidant and cancer preventive agent. Results of in vitro and in vivo studies, suggest that melatonin helps the immune system to eliminate neoplastic cells, before cancer develops.
What to do about this? Sleeping in complete darkness is very important, of course. If your bedroom is not dark, wearing a sleeping mask keeps your melatonin levels high throughout the night. Interrupting the darkness, however, for example by turning on a bathroom light, even for a few minutes, can turn off your melatonin for an hour or more! That's why for many people it's hard to go back to sleep after getting up to go to the bathroom."

From: Sentient Cosmos

Sunday, 23 May 2010

Friday, 16 April 2010

Lamp Longevity

This Philips SL*18D, an early, energy-saving fluorescent, (18W) has just given up the ghost. It was bought in 1985. I estimate that over the ensuing 25 years its use has saved, very roughly but of the right order, 700 kilowatt-hours. Taking the average energy price over the 25 years to have been 5p per kWh that means the cost saving has been about £35.

The lamp itself would have been fairly expensive in those days, probably about £10 but I suspect this has been more than offset by the number of incandescent lamps I would have had to buy over the same period..

It is very heavy weighing in at 550 grams and been in a suspended lamp-holder all its life: but the flex and anchoring seemed to stand the strain.

Wednesday, 24 March 2010

Wind Power - the killer argument

Wind turbines pay back the carbon cost of their manufacture in about 6 months and last for 20 years or more. After that first 6 months every kilowatt they generate is carbon-free and nuclear waste-free and a gain for our grand-children.

That is not to say that it is not preferable to site them out at sea rather than in areas of outstanding natural beauty; but one also should not be misled by nimbys with their arguments about lack of efficiency, and the fickleness of the wind. These are not relevant to the matter in hand, the saving of the planet.

Wednesday, 10 March 2010

Connections

I know someone who once met someone who had once shaken hands with Hitler.

Just thought I'd mention it. . . .

Saturday, 6 March 2010

Last Lines 7

"So we beat on, boats against the current, borne back ceaselessly into the past."

From 'The Great Gatsby' by F. Scott Fitzgerald.

Thursday, 4 March 2010

The force that through the green fuse drives the flower

"The force that through the green fuse drives the flower
Drives my green age; that blasts the roots of trees
Is my destroyer."

From the first paragraph of the poem by Dylan Thomas. Surely a poetic expression of a basic unalienable truth, the common ancestry of all life. When I feel the need to indulge the spiritual side of my nature I turn to works such as this. Of course much of the King James's version of the Bible is superbly poetic and can be enjoyed as such but where is truth to be found in its preposterous subject matter?