Category archives: Science

Wet sand may have helped ancient Egyptians move massive stones Ancient Egyptians dampened the sand to move the 2.5-ton stones used to build the pyramids to prevent berming and halve the amount of force needed to drag the sled, researchers say. The wet sand reduced the friction, making the sledge easier to move. Scientists at […]

Most people have experienced how does it feel when dipping a finger into boiling water or swallowing while having tonsil inflammation. Pain may be annoying, but it is an essential protective mechanism because it warns us against potential tissue damage. This necessary role in survival is illustrated by the shortened life expectancy seen in individuals […]

The issue of the number of species on the planet always comes back to the headlines of the scientific journals. We have addressed this topic before in Mapping Ignorance focusing on a study which estimated that even in theoretically well explored areas such as Europe we have not reached yet the “saturation plateau” of new […]

Bicycles are usually regarded as the most sustainable mean of transport for urban environments. Now, when talking about sustainability, there are usually two different discussions: on the one hand, there is energy sustainability, as the fossil fuels won’t last forever and their secondary products are quite unhealthy. Bikes, being powered by people, fully comply with […]

Coral can change physiology to survive warming seas When oceans become warmer or acidic, coral reef apparently have the ability to change their physiology to survive, researchers have discovered. Studying coral off Ofu Island in American Samoa, researchers found that the coral can use their genes to turn on heat-resistant proteins. Nature News Y chromosome […]

The most widely used metaphors for nuclear fusion reactors are the recreation of the Sun on Earth and the controlled explosion of a hydrogen bomb. In both cases, the first thing that comes to mind is the need for high-performance radiation-resistant materials to contain the fusion reaction. The selection and design of new materials that […]

Psychologists and neurologists have been interested in the problem of free will since the beginning of their specialities, though the first clearly devised and relevant experiments on the topic were those of Libet and colleagues, in the early eighties. In this famous experiment, subjects who were before a clock, and whose brain electrical waves were […]

Advances in the knowledge of the molecular basis of life have provided some of the most impressive and certain proofs to the notion that all organisms on Earth form part of a unique and ancient lineage. One of the most typical examples is the fact that the molecular machinery regulating the biochemical processes common to […]

Slow shaking under Tokyo could mean a giant earthquake Slow-motion earthquakes beneath Tokyo are becoming more common, raising concerns of another megaquake like the one in 2011. GPS sensors are being used to track the slow shifts, which are unreadable by seismographs, and scientists have found that the shifts are coming more frequently but seismologists […]

Let’s try a little game. If I’d show you only parts of a famous building: a column, part of a wall, the ceiling…Would you be able to tell me which building it is I am telling you about? Most likely not. With these elements you could still doubt whether I am talking about an old […]