Wednesday, June 08, 2016
Beyond words – reflections from a 4-day gathering in Svalbard
Monday, July 28, 2014
Nuclear power 2.0: Thorium - hmmm
A few quotes from the article:
"One of the cleverest things about LFTRs is that they work at atmospheric pressure. This changes the economics of nuclear power. In a light-water reactor, the type most commonly deployed at the moment, the cooling water is under extremely high pressure. As a consequence, light-water reactors need to be sheathed in steel pressure vessels and housed in fortress-like containment buildings in case their cooling systems fail and radioactive steam is released. An LFTR needs none of these."
"Even the waste products of LFTRs are less hazardous than those of a light-water reactor. There is less than a hundredth of the quantity and its radioactivity falls to safe levels within centuries, instead of the tens of millennia for light-water waste."
Tuesday, March 19, 2013
Al Gore discusses "The Future" in Science Friday
Gore reminds me of Kassandra, the mythological Greek figure, who was given the ability to look into the future - but was cursed that noone would believe her. Gore has done more than just about anyone else to tell the world of the challenges ahead - but noone seems to listen close enough to act.
"The future" is a good book - I reviewed it (in Danish ) for Politiken - but it is very heavy on facts.
An easier introduction to the themes is listening to this really good interview on NPRs Science Friday with Al Gore.
Sunday, April 15, 2012
The Conundrum by David Owen - review and podcast interview
I did a review of David Owen’s excellent little book ”The Conundrum” for this weekend’s literary section of Danish Newspaper Politiken. I also did a 13-minute audio interview with David Owen about his book.
”The Conundrum” describes how – despite all good intentions – all our efforts to reduce environmental impact by creating more efficient technology end up paving the way for MORE consumption. High speed train make us go further; LED lighting lets us use much lighting everywhere; more efficient refrigerators expands our use of cold drinks, makes fridges available for more consumers – and expands our use of Air-conditioning as well.
David Owen concludes that we need a more fundamental shift – but that shift is a lot more difficult.
From the book:
”We’re consumers at heart, and our response to difficulties of all kinds involves consumption in one form or another: Just tell me what to buy. The challenge arises when consumption itself is the issue. How do we truly begin to think about less – less fossil fuel, less carbon, less water less waste, less habitat destruction, less population stress – when our sense of economic, cultural and personal well-being is based on more?”
”In truth we already know what we need to do, and we have for a long time. We just don’t like the answers. That’s the conundrum.”
Monday, April 02, 2012
Climate change is like an asteroid on collision course with earth
Renowned climate scientist James Hansen has a TED talk out. Low key, but very scary:
”Imagine a giant asteroid on a direct collission course with earth. That is the equivalent of what we face now. Yet we dither, taking no action to avoid the asteroid, even though the longer we wait, the more difficult and expensive it becomes. If we had started in 2005 it would have required emission reductions of 3% pr. year to restore planetary energy balance and stabilize climate this century. If we start next year, it is 6 % pr. year. If we wait ten years, it is 15% pr. year – extremely difficult and expensive, perhaps impossible. But we aren’t even starting. So now you know what I know, which causes me to sound this alarm”.
