Human brain organoids implanted in mice have developed and formed neural networks of the cortex, the layer of gray matter that controls functions such as cognition, language, and decision-making. The breakthrough, presented today in the journal Nature, improves the ability to grow human brain tissue for medical research.
The discovery of new fossils and tools of the extinct species known as the Denisovans reveals new clues about humans surrounded by mystery who, it is now known, inhabited almost all of Asia and were continuously present in southwestern China for 120,000 years, successfully adapting to very different environments.
Scientists from the United States have announced a possible breakthrough in the search for the enigmatic dark matter that makes up most of the matter in the universe and has so far never been directly observed. They have identified the trace of a particle that does not match any currently known particles, but fits with some theoretical models of dark matter.
Tumors produce antioxidant molecules that inactivate immune system cells specialized in eliminating cancer. But if the antioxidants produced by tumors are removed, the immune system’s ability to control the disease can be restored.
Semaglutide, the weight-loss drug marketed as Ozempic and Wegovy, has extended the lifespan of mice that started receiving it at an advanced age by 12%, according to research led by the University of California, Berkeley, published today in the journal Nature. The increase in longevity has been accompanied by an improvement in aging indicators related to cognitive functions, immunity, metabolism, activity level, and blood cell regeneration, among others. Future studies will need to clarify whether these benefits extend to people who take semaglutide or similar drugs, as researchers suspect.
A drug that simulates the effects of physical activity on the human body has been well tolerated, with no significant side effects, and has shown signs of efficacy in the 88 volunteers who tested it in its first clinical trial, according to the American biotechnology company Enveda in a statement.
Around one in three men and one in five women in Spain have atherosclerosis before the age of 40. They are unaware that they have damaged arteries because they do not yet have any symptoms, but they have a high risk of suffering a heart attack or stroke years later. In the age group of 40 to 50 years, the number of people with atherosclerosis rises to two-thirds of men and almost half of women.
The European sea usually reserves its highest temperatures for August or September. But this year, at the end of July, it already reached its highest value since daily satellite records began in 1982. The same happened in the western Mediterranean. A new analysis shows that that previously extraordinary heat is becoming part of the usual climate. Human-caused warming has added around 1.4 °C to the highs off the peninsula and nearly 1.9 °C in the western Mediterranean.
Spain is preparing to experience on Wednesday, August 12, a total solar eclipse, an exceptional astronomical phenomenon that darkens a large part of the sky for a few minutes as the Moon becomes completely aligned between the Earth and the Sun.
In the era of trumptosterone, U.S. Secretary of Defense Pete Hegseth announced on Wednesday that annual testosterone tests will be conducted on soldiers and treatment will be offered to those with low hormone levels. Tests will be mandatory for those over 30 and voluntary for younger ones.
