This year I have been reading a few good books on climate change. I enjoy the more technical ones, particularly those written a few years ago, rather than the new, wishy-washy ones that are cropping up bookstores these days. The minimum knowledge needed to grasp the surface of climate change is quite extensive, and I know I need all those numbers, figures and tables to make sense of the problem.
Something I have noticed though is that none of these books starts with a discussion of the graph that I think encapsulates more information relevant for the current crisis. The figure is the following: Continue reading “Billions of Humans need Trillions of Trees”
I wake up.
I have a slight headache, probably caused by dehydration and the changes in cabin pressure. I check my watch. 3:16 am. I must have slept for three hours, and now I know I won’t fall asleep again. Inside the plane everything is dark, and you can only see the glow of a few screens scattered around, and the shadows of my airborne companions, hidden behind piles of blankets, pillows, eye masks and earplugs. Everything is quiet, except for the numbing roar of the giant engines outside, in their process of devouring dozens of tons of fuel. I look to my side and see that the Venezuelans are sleeping like logs. Gosh, I do envy people with the power of sleeping on a plane. I turn on my laptop and continue writing.
Continue reading “I am not proud of flying (but I am not ashamed of it either) – Part 2”
It’s a rainy night in London, and I am drinking a glass of whiskey in a bar at Terminal 2 of Heathrow Airport. I wanted to avoid the rush hour, so I left my flat earlier than needed, but now I find myself with a lot of time to kill in this place. I brought David MacKay’s excellent book “Sustainable Energy Without the Hot Air”, and I am hooked on the technical chapter III.C (Planes II). This is one of those books that you enjoy more with pen and paper. In the 45 minutes that I have been here, I have scribbled four pages of equations and diagrams, following his derivation of the total power required to keep a plane in the air, and his formula of transport efficiency.
Continue reading “I am not proud of flying (but I am not ashamed of it either) – Part 1”
Two terrorists talk about their plans in a bar while having a couple of beers. The waiter, listening to them, approaches and asks: “Excuse me, gentlemen, but what are you talking about? “The terrorists look at each other, and after a brief pause, the first one answers: “Well, you see, we are planning an attack in which ten thousand people and a horse will die“. “A horse?“- says the waiter – “Why do you want to kill the horse? “. “I told you! “- shouts the second terrorist, scolding his partner -“Nobody will care about ten thousand dead! ”
Continue reading “Two terrorists talk in a bar”
Rodrigo Uprimny, scrutinising the methodology used by the Colombian government to conclude that the number of homicides of social leaders has decreased over the last year, wrote the following: “A single violent death of a social leader is unacceptable, and that is what makes so unfortunate to discuss the accuracy of their homicide rates, since the numerical debate can conceal the human tragedy behind each homicide.” Three years ago, I had the same feeling when I was estimating the potential impact that a deal with the FARC guerrilla could have in Colombia’s violence, specifically in the number of homicides. At the time, I thought that such “numerical debate” was a gross simplification of the horror that afflicts the lives of thousands of people. When I shared the progress of my results on Facebook, I did it with shame, almost excusing myself for having the boldness to project the violence of the country in cold numerical calculations.
Continue reading “Predicting The Tragedy: Some Forecasts Of Violence In Colombia”
Here is a personal anecdote, of something that happened three years ago, during the days of the referendum for the peace agreement in Colombia. It was the summer of 2016, and I was one of the millions of Colombians who were sure about the benefits of the deal that the government had reached with FARC for its demobilisation. I suppose that I will offend half of my readers when I admit that two years before I had already voted for the re-election of Juan Manuel Santos, precisely because at that time it seemed to me that it was best to let the process move forward. Calling the people to endorse the agreement was an absolute stupidity (something that I already wrote about in this blog before), but to me, voting in line with what the government had been working for four years was the most coherent thing to do. There was some light at the end of the tunnel.
Continue reading “The Seed of Doubt: The Impact of the Deal with FARC in Colombia’s Violence”