Participating in the Coursera online courses is keeping me busier than I’d first thought, but I still had time to read up on science-related stuff.

• Ever wondered while on a journey why the return trip always feels like it passes more quickly than going there? According to this article in The Irish Times, this is due to how our psychological perception of time differs according to circumstances. The article calls this an act of retrospective timing. That is we try to estimate how much time an event took after it has already passed from memory. However, this is done by recalling the information we stored during the event, and the more information we stored, the longer the duration we perceive it to have taken. This means that when we’re first traveling to a new place, we have all sorts of new data to absorb and store, but during the return trip, most of it will have become familiar already. Hence we perceive the outbound trip to have taken longer than the return trip.
• Along with video-gaming nerds, comic books fans have long been relegated to the depths of otaku social outcasts. But this article from The Pacific Standard talks about closely identifying with a superhero may have measurable positive effect on their bodies. A study invited undergraduates, male ones only, to state how familiar they were with Batman or Spiderman and went on to query the students about how they felt about their bodies. Those who did identify with one of the superheroes not only felt better about their bodies, they were also able to demonstrate measurably greater strength, especially when they were shown pictures of a more muscular version of the superhero in question.
• This next link seems to be down frequently but it’s such an interesting article that I just had to link to it. It appears on the Psychology Today website and talks about the Baining, an indigenous group of Papua New Guinea, who have the distinction of being known as one of the dullest people on Earth. They apparently have nothing in the way of the usual cultural accoutrements such religious rites, myths, festivals etc. and discourage playful of any kind, even among their children. The only thing they have going for them is work and they value all products and activities that are associated with useful work.
• Finally an article about the Curiosity rover currently on Mars. It’s from The Atlantic and it reveals how the engineers at Jet Propulsion Laboratory built in a little Easter Egg. Specifically the vehicle’s treads are designed to spell out in Morse code the initials J-P-L as the robot slowly makes its way across the red Martian soil. That is such a geeky thing to do I just had to include it here.

Ok, this totally breaks this page’s formatting, but what the heck. Forget the Olympics. This is the greatest spectacle going on right now and it’s not even on Earth. Yes it’s a CGI rendition instead of real imagery but what do you expect about something going on on Mars? The landing procedure is the stuff of science-fiction.

July 2012 has been a less awesome, insofar as science articles go. I guess things do slow down in the summer.

• This isn’t the first article about empathy for humans as displayed in dogs that has appeared in this blog, and it won’t be the last! This article from The Economist covers experiments performed to see if dogs can really perform actions out of empathy for the perceived suffering in humans, as opposed to acting out of curiosity. This was done by observing the behavior of dogs when alternately encountering a human crying and exhibiting other signs of distress or merely humming. They also alternated between using a trusted human for the dogs and a complete stranger. The results were that the dogs could indeed recognize distress in humans and react by whining, nuzzling, licking, and fetching toys for the human perceived to be suffering. They did this to the suffering human even if he or she was a stranger and their master was in the same room, indicating that it was the comfort of the suffering human that they sought rather than their own comfort.
• Just last month I had an article talking about how more modern pop music is getting sadder and sadder while becoming more emotionally ambiguous. This month I have a new article from Reuters making a different claim: that pop music is getting louder and louder, while at the same time becoming less diverse with a more limited variety of sounds. They’re not directly contradictory but they are odds enough that the two teams should probably have a good long discussion with each other about just what is going on.
• This next one is cheating a bit as it’s more of a demonstration video than a science article. Its about the color shifting abilities of a species of cuttlefish in Australia, Sepia plangon. Nothing new, you say? Except that this one is not only capable of shifting its colors, it can apparently shift each side of its body to a different color scheme, in this case, mimicking a female with half of its body and a male with the other half. This demonstrates not only as astounding level of control over its own colors but also an awareness of just who is looking at it from each direction.
• Ever wondered while walking in the rain if it would be more effective to run through the rain or walk steadily through it to minimize wetness. I did and judging by the contents of this Washington Post article, I’m not the only one. Intuitively, running is better to minimize your time spent in the rain but at the same as you travel fast, you run into more raindrops in your path. Walking steadily increases your exposure time, but you present a small target and you don’t walk into raindrops. The paper summarized in this article concludes that for most cases, running is best but the true answer really depends on your body shape, the direction of the rainfall (vertically or at a lateral angle), the angle of the path you are traveling across and so forth. It is truly a profound topic.
• Finally, no rundown would be complete without the biggest scientific news of the month: the confirmation of existence of the Higgs boson at the Large Hadron Collider. There are many articles about it on the web but I’m partial to this one from the BBC. There are no practical applications for this but it is pretty solid confirmation of the Standard Model of physics.