After the baby teeth, permanent teeth emerge—this is something we all know. These permanent teeth can be lost due to severe cavities or periodontitis, leaving only the option of implants or dentures. However, a…
Read More
When there's no time to waste, you have to go all out. This must be the maxim of the males of the tiny red spider, who "undress" the nearly mature females so they are available for mating as soon as possible. This "behavior…
"July 7th, San Fermín," goes the most traditional song in Pamplona. A celebration inextricably linked to the running of the bulls, it began back in 1385 during the reign of Charles II the Bad. It seems its origins lie in...
It was the year 1275 when Alfonso X the Wise was traveling with his daughter, Infanta Leonor, to meet with Pope Gregory X in France. The young woman, about 19 years old and the fourth of the king's eleven legitimate children, died suddenly on the journey. Her father…
The James Webb Space Telescope (JWST) has discovered the most distant active supermassive black hole to date, located in a galaxy, CEERS 1019, that existed only about 570 million years after the Big Bang. The object emerged very early…
The origin of Earth's water is a question that has vexed scientists for decades. Some believe the liquid element arrived from space, aboard comets and asteroids, which released it as they fell to Earth...
One of the most popular theories about why we greet each other with a handshake explains that it's a way of showing that we're unarmed, as a sign of peace. But another theory suggests a supposed biological origin, to detect the chemical signals of…
It took 15 years of data collection and the creation of a virtual laboratory almost the size of our galaxy, but scientists have, for the first time, managed to hear the perpetual chorus of gravitational waves that permeates the entire universe.
A planet within a planet. That would be a good way to describe the 2,442 km diameter ball of solid metal at the center of the Earth, without which, incidentally, there would be no magnetic field and no life on the surface. But how do we…
On October 17, 1934, Santiago Ramón y Cajal, one of the most brilliant Spanish (and world) scientists in history, the father of modern neuroscience, and a Nobel Prize winner, died in Madrid. Before that day, he had written in his will that…