Asteroid Day

I am late with this. I just learned from this tweet by Neil deGrasse Tyson that yesterday was asteroid day. There is a campaign that wants to increase awareness about the threat from asteroids. The date is set after the 1908 Tunguska event, which happened on June 30th. The campaign wants to increase funding for finding … [Read more…]

Old Carbon

Here is a short elevator pitch video from NASA about global warming: The interesting thing is that it talks about “old carbon”. It explains that the carbon stored in coal was stored there hundreds of millions of years before. And we are releasing it now. It does not discuss the issue from the point of … [Read more…]

David Roberts On Solar And Wind Limits

David Roberts discusses the question if there are any economic limits for solar and wind grid penetration. In that article he discusses a “rule of thumb” recently developed by Jesse Jenkins and Alex Trembarth, authors working with the “Breakthrough Institute”. Their rule of thumb is that maximum grid penetration is equal to capacity factor. That … [Read more…]


That is of course the title of the seventh James Bond novel by Ian Fleming published in 1959. But in this post I want to talk about the plot of the 1964 film. In both the book and the film the villain attacks the United States gold reserve at Fort Knox. But there is a difference. In … [Read more…]