The renewed concern for the care of the environment has led to lower emissions of greenhouse gases without sacrificing modern comforts. Widespread proposal focuses on energy produced from renewable sources and its subsequent storage and transportation based on hydrogen. Currently, this gas applies to the chemical industry and its production is based on fossil fuels. The introduction of this energy vector requires the development of environmental-friendly methods for obtaining it. In this paper, existing techniques are just presented and the main focus is made on electrolysis, a mature procedure. In turn, some developed proposals as previous steps to the hydrogen economy are presented. Finally, some lines of research to improve alkaline electrolysis technology are commented.
Recently, it has been discovered that depressed people are less likely than nondepressed people to succumb to an "illusion of control" and judge that their actions influence outcomes that are objectively uncontrollable. This experiment examined the relationship between depression and susceptibility to the illusion of control for oneself and for others. Depressed and nondepressed college students were asked to judge either how much control they themselves had or how much control a male or female confederate had over a noncontingent, but positive, outcome. Replicating past findings on depression and judgments of control, depressed subjects judged relatively accurately that they exerted little control over the experimental outcome, whereas nondepressed subjects overestimated their personal control. Subjects' judgments of the confederates' control were a function of the subject's mood state and sex as well as of the confederate's sex. With one exception (depressed males in the male other condition), depressed subjects tended to overestimate the confederate's (male or female) control over the noncontingent outcome. Nondepressed females also judged that the confederate (male or female) exerted a high degree of control, thus succumbing to the illusion of control both for themselves and others. Nondepressed males, on the other hand, tended to judge more accurately that the confederate (particularly the female confederate) exerted little control and thus, succumbed to the illusion of control for themselves but not for others. These findings imply that an adequate understanding of depressive and nondepressive cognition requires an interpersonal as well as an intrapsychic perspective.
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