Chimera was a monster from the Greek mythology, a hybrid creature usually depicted as a lion, with the head of a goat arising from its back and a tail ending in a snake. In biology, the term «chimera» is used for a single organism with genetically distinct cells from two different zygotes, also a hybrid […]
Ionization is a fundamental process in chemistry and physics, lying at the heart of many fascinating phenomena. Ionization is the process of producing ions. Certain molecules ionize in solution, for example. But ions may also be formed when an atom or molecule loses one or more electrons as a result of energy gained in a […]
When I buy in a market I only deal with myself regardless of whether the market is competitive or in the hands of a monopoly. Given the price, I choose how much to buy. In an auction to get a Government project a firm has to anticipate what the other firms are bidding, but and […]
Intense flavors imprint our palate at every spoonful of Asturian fabada, an unquestionable cultural hallmark of Northern Spanish cuisine. Because of the present United Nations´ international year of pulses, we are visiting here some bits of the science about a food regime particularly rich in them. Beans, lentils, and chickpeas are feeding building blocks for […]
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Mars’ magnetic field shaken by close comet flyby A comet streaking by Mars in 2014 wreaked havoc on the Red Planet’s fragile magnetic field, according to data collected by the Mars Atmosphere and Volatile Evolution, or MAVEN, spacecraft, according to NASA. Discovery Bacteria found in Japanese recycling center evolves to consume plastic A bacteria that […]
Although it may sound illogical, destruction of cells is as essential as their creation in the course of proper formation, growth and development of multi-cellular organisms. For this reason, cells program deliberately their suicide through a very controlled process, named apoptosis (from the Greek, “fall off”). Our research group at the University of Tübingen, Germany […]
The most extensive use of semiconductors, such as silicon or germanium, including their use as transistors, arises from their behavior when, after being sufficiently purified of atoms other than the basic element (e.g., silicon or germanium), very small amounts of special impurities are carefully introduced. While the methods for first purifying then adding small amounts […]
Trains are one of the least consuming means of transport, and it is mainly due to the metallic wheels and rails: there is almost no energy dissipation due to the rolling contact. Of course, not everything is so great with a steel wheel rolling on a steel rail, as the loads transferred between them can […]
It is a crystalline description of how stubborn mental biases can be. Perhaps Albert Einstein, the alleged author, would have agreed with the proverb: “ it is harder to crack a prejudice than an atom ”. But ironically and paradoxically, it hides itself a bias behind. Einstein likely never said the sentence. Why so many […]
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Farthest galaxy ever seen spotted by Hubble The Hubble Space Telescope has spotted the farthest galaxy found so far, 13.4 billion light-years away, according to findings published in the Astrophysical Journal. Astronomers say the galaxy, GN-z11, dates back to just 400 million years after the Big Bang. The Christian Science Monitor Mars’ outer layers shifted […]