Blazars draw power from black holes High-energy particles such as neutrinos and cosmic rays that pummel the Earth from the depths of space originate in actively galactic nuclei fueled by giant black holes, known as blazars. “The discovery of the […]
When the surface of a perfect conductor is structured at a length scale much smaller than the operating wavelength, geometrically induced surface electromagnetic modes can be supported. Owing to their similarities with the surface plasmon polaritons in the optical regime […]
Modelling of neuron-glial interactions is an emerging field of Computational Neuroscience. The ubiquity of these interactions and the possibility that they may occur within the time and spatial scales that are usually ascribed to neuronal and synaptic function, calls for […]
New research has unearthed evidence that points to a strong relationship between the magnitude of mass extinctions and global temperature changes in geologic times. Abrupt climate change, accompanied by environmental destruction from large volcanic eruptions and meteorites, has caused major […]
Mammals became warm-blooded around 233M years ago Warm-blooded mammals evolved roughly 233 million years ago, nearly 20 million years later than previously believed, after studying tiny inner ear canals that carry a viscous fluid called endolymph, which flows more easily […]
Once upon the time, or to be precise between 200 and 150 000 years ago, the incipient humanity was struggling with climatic conditions in its land of origin, Africa. A long glacial era, M2 , had made it difficult to […]
You will have read and heard a lot of times that we are living in a new geological period, that has been baptized as ‘the Anthopocene’: the age of the Earth in which our species has become the predominant force […]
Since the discovery of graphene, a wide diversity of atomic-layer-thick, two-dimensional (2D) materials with varied properties have emerged. Of particular interest are those that exhibit semiconducting behaviour, such as hexagonal boron nitride (hBN). hBN is isoelectronic to graphene and has […]
Imagine a conductor or a semiconductor through which a current is flowing. Then we apply a strong transverse magnetic field. As a result, we can measure a potential difference at right angles to both the current and the field caused […]
For the intellectual history of our century, one of the most important books published in 2021 will probably be David Graeber’s and David Wengrow’s The Dawn of Everything: A New History of Humanity , a monumental description of the evolution […]
Every geography schoolbook has them: maps that look like today’s Earth, but not quite, since all continents are merged into a single supercontinent. Those maps were used to explain why dinosaurs in South America and Africa, or North America and […]
We can model the motions of planets in the Solar System quite accurately using Newton’s laws of physics. But in the early 1970s, scientists noticed that this didn’t work for disc galaxies – stars at their outer edges, far from […]
Most internet users are by now aware of the vulnerability of their personal data. When the news broke that tech companies misuse and manipulate our personal data, there was a widespread “techlash” against the corporate giants Facebook, Amazon and Google […]
Now that the U.S. Supreme Court has given states final say over if and when abortions are legal, the political debates over abortion rights will intensify in legislatures and courthouses around the nation. Many of those discussions will hinge on […]
It is not an exaggeration to say that the question of where and when the Black Death, the deadliest pandemic ever, originated is one of the biggest mysteries in human history. After all, the Black Death was the first wave […]