There is something both fascinating and disturbing about quasars. These supermassive black holes surrounded by a disk of incandescent matter give off the most intense brightness in the universe which is fueled by the surrounding matter they engulf. The first quasar was identified in 1963. Named 3C 273, it is one of the closest quasars … Read more

The sound of church bells has filled European landscapes for more than 800 years. During this period, numerous cathedral fires required the bells to be reinstalled. [Article issu de The Conversation, écrit par Madeleine Burgess, PhD Candidate in History, Bangor University] In 1320, for example, the bell tower of Bangor Cathedral in North Wales burned … Read more

[Article déjà publié le 31 mars 2024] Birds are endurance animals capable of withstanding prolonged physical effort to cover long distances by flying. Wild species are obviously more accustomed to flying than domestic species. Among these birds, migratory species are those that can fly the furthest for the longest time. However, these animals do not … Read more

After a long-haul flight or a night of work, you usually don't feel very good about yourself. This is mainly because of what scientists call “circadian desynchronization”. Our internal clock is no longer in sync with daily changes in the external environment. British researchers recently examined the effects of being out of sync for a … Read more

The quantum computer: power beyond binary To understand the importance of this advance, we must first delve into the concept of quantum computing, often perceived as complex. Today, classical computers work by manipulating bits, units of information that can only represent two states: 1 or 0. Imagine a switch that is either on or off. … Read more

In the silent immensity of space, every everyday gesture becomes a technical and logistical challenge. Deprived of gravity, astronauts operate in an environment where water floats freely, elusive, defying terrestrial laws. Staying hydrated, such a simple act on Earth, requires innovative solutions to adapt to these unique constraints. Since the beginning of space exploration, ingenious … Read more

Globally, obesity has more than doubled among adults since 1990. Today, an estimated one in eight people are obese. However, this disease increases the risk of developing diabetes, cardiovascular disease and certain cancers. Added to this are mobility problems and sleep disorders. Obesity is therefore a major public health problem. Unfortunately, effective long-term treatments remain … Read more

[Article déjà publié en mai 2024] The animal world is full of wonders and surprises, and mammals are no exception. From giants like the Paraceratherium (Hornless Rhinoceros) to tiny ones like the Salpingotulus michaelis, the diversity of sizes and shapes is impressive. As we explore the history of the smallest mammals in history, from a … Read more

[Un article de The Conversation écrit par Damián Tuset Varela – Chercheur en droit international public et IA. Tuteur du Master en relations internationales et diplomatiques UOC, UOC – Universitat Oberta de Catalunya.] A few months ago, Spaniards were able to see on television people listening to digital reconstructions of the voices of their deceased loved ones … Read more

The Ethiopian wolf, or Abyssinian wolf, is a species endemic to Ethiopia. Usually, it is a strictly carnivorous predator, however, scientists have been able to observe it allowing itself a few sweet treats. It actually comes to lick the flowers of a certain plant in its environment, thus contributing to the dispersion of its pollen. … Read more