From nucleic acids to proteins and sugar chains, all life is made up of polymers, large molecules made up of sequences of small units called monomers. However, how these macromolecules first appeared on the surface of Earth is still controversial. It is generally assumed that, right before life started, our planet was covered in very […]
Each of the Voyager probes, two unmanned spacecrafts launched in 1977, has a gold-plated audio-visual disc, a recording that aims to introduce us to a possible alien and to show the diversity of living beings and cultures that planet Earth has. Carl Sagan said that «The spacecraft will be encountered and the record played only […]
Researchers deliver cells to mice, zebrafish using tiny robots Magnetic microrobots about the width of a hair have delivered cells to preselected sites within living mice and zebrafish. Researchers say the technology may one day be used in cell therapy and regenerative medicine. The Scientist Survey locates previously unknown galaxy cluster A previously unknown galaxy […]
Condensed matter • Materials • Quantum physics • Theoretical physics
The wave nature of light expresses itself in the propagation all over space, showing an intrinsic limitation to be localized beyond the so-called diffraction limit which is of the order of half the wavelength of the photons propagating. However when interacting with matter, light often gets reflected, diffracted, scattered or absorbed depending on the interactions […]
Why people younger than 22 with congenital or acquired heart conditions should be more likely of developing a cancer? Actually, a small number of studies have been published, suggesting relatively high cancer incidence and mortality, compared to the general population. If it is true a correlation exists, there are several potential explanations. It could be […]
The concept of moduli space is of utmost relevance in theoretical physics and mathematics, especially in geometry, topology and string theory. A moduli space is, roughly speaking, a space that classifies a given class of objects modulo an equivalence relation # which identifies the objects in that we want to consider as equivalent or, more […]
Accepting asylum-seekers, migrants boosts nations’ economies An influx of migrants and asylum-seekers is beneficial to a country’s economy within five years. Researchers based their findings on 30 years’ worth of data collected from 15 Western European countries. Nature Shallow hydrothermal vents discovered near Azores Hydrothermal vents found off the Azores are not as deep or […]
Since the discovery that graphene, the two dimensional carbon allotrope, can be isolated and incorporated into electronic devices intense research efforts have been triggered. Driving forces usually mentioned behind the experimental and theoretical studies of graphene are the exceptional electronic properties, in particular the high electron mobilities, the long spin coherence lengths and the possibility […]
While I was at school it was almost a dogma that you’d not get a neuron more than those you were born with. Later, at university we learned that actually there was a region in the human brain, namely the hippocampus (key region for memory formation) where there was indeed adult neurogenesis, that is, formation […]
Ravallion (2018) questions the thesis that globalization has been a major driving force of inequality. While this is the conclusion of two recently published books (Bourguignon, 2016 and Milanovic, 2016 ), Ravallion argues that their interpretation of the data is not well supported and that is even contradicted by the economic research. Here is a […]