Astrophysicists from Yale University have recently claimed the discovery of a galaxy lacking dark matter . But, to fully understand (and assess) the excitement produced by this paper, let’s review a couple of things regarding dark matter and galaxies. In the current lambda-Cold Dark Matter (ΛCDM) paradigm, the most accepted “theory to model the Universe […]
ESA’s Gaia mission releases 2nd data set on Milky Way observations Scientists are studying the latest data from the Gaia satellite, launched by the European Space Agency in 2013 to chart the Milky Way’s stars with great accuracy, in search of new discoveries about the galaxy. This is the second set of data received from […]
In ‘Chemistry Essentials for Dummies‘, John T. Moore writes: Matter is anything that has mass and occupies space. It can exist in one of three classic states: solid, liquid, and gas. When a substance goes from one state of matter to another, the process is called a change of state, or phase change. As he […]
In 1928, Santiago Ramón y Cajal, the founder of modern neuroscience, wrote that the brains of adult humans never make new neurons. “Once development was ended,” he proclaimed, “the founts of growth and regeneration … dried up irrevocably. In the adult centers the nerve paths are something fixed, ended and immutable. Everything must die, nothing […]
Reducing weight in all kinds of vehicles is currently one of the hot topics for Materials Science and Product Design. This goal is directly related to one of the grand challenges that society is facing, that is, mitigate greenhouse gases (GHG) emissions by reducing fuel consumption. Lighter vehicles consume less fossil fuels, which is definitely […]
New species of exploding ant discovered in Borneo A new species of exploding ant has been found in Borneo. Female worker ants in the Colobopsis explodens species sacrifice themselves to protect their colonies from threats by rupturing a part of their abdomens and releasing a toxic substance that covers their adversaries . Live Science New […]
We usually think of crystals as composed of different atoms in certain proportions, this proportion being the molecular fórmula that represents the crystal. However, it is not surprising that any molecule could be the basis of a crystal structure, whether a simple molecule such as methane, or a complicated molecule such as a protein or […]
One of the topics of discussion within behavioral economics is the motivation of effort. Although the typical economic model usually assumes monetary incentives, they do not preclude the existence of other factors, like preferences for being first or psychological and economical benefits from reputation. The growing experimental literature on this area will help to determine […]
In the two previous entries (1, 2) of this series I described the different diagnoses that Marina Garcés and Steven Pinker make of humanity’s current predicament, without concealing my sympathies for the latter’s: with up and downs, with unequal division of the benefits, without bringing us a literal paradise, with lots of problems still to […]
Researchers devise method to join two single, specific atoms into new molecule Chemists used laser tweezers to grab a sodium atom and a cesium atom to create a new molecule in a highly controlled chemical reaction. Science News How cancer might progress by studying cells’ evolution Researchers charting the genetic evolution of seemingly similar cancer […]