Urban heating, or at least the increase thereof, has been in the spotlight for some time. And the basic effects were known to me. But after hearing a lecture by Math Santamouris during a recent Conference, a whole new world… Continue Reading
Nitrogen levels are too high, as are levels of particulate matter, too much manure, CO2 emissions continue to rise, as does methane emissions, biodiversity drops dramatically, the agricultural land is exhausted, natural gas fields collapsing, heat waves of 40 degrees,… Continue Reading
It has been a year since the Dutch version of the book was published, Gebroken Kringlopen (Broken Cycles). I handed out the first copy to Marjan Minnesma, who is on top of the required transition with NGO Urgenda. The English… Continue Reading
If the government does not protect the citizen, but its decisions are influenced by a few rebellious farmers, some flying fanatics, some screaming builders, and exporting parasites, then it’s time for action. After all, we have appointed civil servants and… Continue Reading
Why didn’t we realize this before… Since a year or two there has been a working group of a number of collaborating scientists in Europe, under the wings of an international NGO (iiSBE) who are investigating what the ‘carbon budget’… Continue Reading
Some time ago , I was in a meeting for writing a biobased building manifest. Very interesting discussions, which were hardly ever held at the policy level. Although I get signals that the discussion about the impact of materials, as… Continue Reading
This is an extended version of a previous post on linked in, which had a lot of reactions.. {april 2019} When it comes to Embodied Energy, we are used to normalize this over the lifespan of a building (… Continue Reading
A few months ago I wrote about agriculture, and that the EROI was 0.16: 1 (energy return on (energy) investment) – on average across all agricultural products in the Netherlands, and the EL (Embodied Land) no less than 7.7 ha-year… Continue Reading
Amsterdam needs around 50,000 charging points for electric cars. 50,000? Really? Have we gone completely nuts or what? Doesn’t alarm bells start ringing: “What the hell are we doing?” Where do all these raw materials come from, and the energy… Continue Reading
There were boxes full of books and reports, even up to 40 years old. And since it was too hot to do anything outside, I finally cleared the attic. Going through the boxes one by one, its hard to avoid… Continue Reading