Our brain constitutes one of the finest pieces of natural machinery known, and it allows us to efficiently interact with our environment: searching for food, avoiding predators, communicating with other individuals, and even some more sophisticated stuff — like enjoying a well composed piece of classical (or rock) music. However, all this comes at a […]
Humanities & Social Sciences • Science • Technology • Weekly Selection
Dog breeds in Americas trace ancestry to Asian dogs A study found that modern breeds of Chihuahuas, Arctic sled dogs and Peruvian hairless dogs trace their ancestry to dogs that humans brought across the ancient land bridge that connected North America to Northeast Asia. The study compared DNA from Asian and European dogs with archaeological […]
The relation of cancer and the immune system has been traditionally regarded in terms of war; a force of courageous immune system soldiers representing, lets say, The United States of Your Body facing the evil forces of anarchy in the form of tumoral cells. Following this logic the immune system eradicates tumors (elimination phase) until […]
Truth has been, and still is, one of the most important topics in the history of philosophical thought. How to get truth from falsity, how to approach the truth, or the connection between truth, wisdom and the sense of life, all that has been the object of never-ending debates which anyone familiar with philosophy will […]
Humanities & Social Sciences • Science • Technology • Weekly Selection
Clouds protect habitable planets from star’s heat According to a recent study that developed a 3D model to explore how clouds affect temperatures on exoplanets, the number of habitable worlds could be double the amount previously thought. The study found that as many as 60 billion exoplanets fall within a habitable zone around their star […]
The gecko, a climber´s hero, a lizard able to get a grip even face down on the smoothest ceiling or on the most vertical slippery surfaces. That, the adherence is one of the most striking features in most of the species in the family Gekkonidae. In Spain they are also known as “lagartijas” or “salamanquesas” […]
Nowadays, there is a growing demand for new biosensors capable of detecting specific molecules, contaminants or toxic substances in food, drinking water, air, blood and so forth, with a high degree of sensitivity and specificity. Furthermore, we preferably want these biosensors to be inexpensive, easily reproducible and with a rapid and accurate response. This demand […]
Humanities & Social Sciences • Science • Technology • Weekly Selection
Poor Math Skills Make a Mortgage Default More Likely Unprecedented numbers of American subprime mortgage holders began defaulting on their loans in 2006, precipitating two years later the most severe global recession since The Great Depression. Pundits have offered numerous theories about what started the mortgage mayhem, but firm evidence has remained elusive. According to […]
Biomedicine • Materials • Neurobiology • Physics • Physiology
Human brain has about 85 billion neurons. Each neuron forms thousands of chemical and electrical synapses with other neurons. To record the synaptic activity of each neuron in the brain an intracellular probe with a millivolt scale is required. Glass electrodes are widely used, but they are fragile and they have high impedance. An intracellular […]
Seed germination can be defined as the restart of growth of the embryo of the mature seed. Germination depends on the same environmental conditions as vegetative growth does, water and oxygen must be available, the temperature must be suitable and there must not be inhibitory substances present. However, it is common that even in favorable […]