University of Alcalá
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Specialist in Endocrinology and Gender Identity and honorary professor at the University of Alcalá
Professor of Applied Physics and Honorary Research Professor at the University of Alcalá
Professor of Pharmacology at the University of Alcalá
Astrobiologist and lecturer of Biochemistry at the University of Alcalá
Senior Lecturer at the University of Alcalá and Member of the Knowledge and Research Management Committee at Médicos del Mundo
President of the Spanish Glaucoma Society (SEG), head of the ophthalmology department at the Ramón y Cajal Hospital and professor of ophthalmology at the University of Alcalá de Henares (UAH).
Assistant Professor, PhD, Public Health and Epidemiology Research Group, University of Alcalá
Doctor of Health Sciences from the University of Alcalá (UAH), external member of the UAH's Food, Nutrition and Public Health Strategies research group, and lecturer at UNIR and CUNIMAD
Assistant professor of Physical and Sports Education and researcher in Epidemiology and Public Health at the University of Alcalá
Head of International Relations at the Spanish Society of Public Health and Healthcare Administration (SESPAS), organiser of the 2026 European Public Health Conference (EUPHA), Ikerbasque Research Professor at the Basque Centre for Climate Change (BC3) and professor and researcher at the universities of Alcalá and Johns Hopkins
A team has proposed an indicator known as the plastic particle footprint (PPF) to measure the environmental impact of microplastics and nanoplastics in products. In an article published in Science Advances, the authors apply this calculation to four everyday items and claim that calculating this footprint could “radically change the best material option”. For example, a polyester T-shirt and a cotton one have a similar carbon footprint, but the PPF of the former is higher than that of the cotton garment.
Amid an unprecedented international security and coordination operation, the MV Hondius has arrived at the port of Granadilla, in Tenerife, where epidemiologists and members of the Foreign Health Service will examine the passengers and crew, who have not shown any symptoms of hantavirus so far. Once assessed, they will leave the ship, which is moored in a dock, in small boats to the port, grouped by nationality – they come from 23 different countries. From there, they will board military vehicles to reach Tenerife South Airport, from where they will be repatriated on various flights. The 14 Spaniards and a member of the WHO from Africa are bound for Gómez Ulla Hospital (Madrid) to undergo quarantine. Once the process is complete, the cruise ship will refuel and sail to the Netherlands with part of the crew on board and the body of one of the three fatalities.
Colored microplastics and nanoplastics suspended in the atmosphere could contribute to global warming at a level equivalent to 16% of that caused by soot. The findings, published today in the journal Nature Climate Change, suggest that these particles may be previously unrecognized contributors to climate change, and that their role should be taken into account in future climate assessments. The authors note that laboratory experiments are a simplified version of atmospheric processes and that the global distribution of microplastic and nanoplastic particles must be determined more precisely through observations.
NASA’s Curiosity rover has found more than 20 organic molecules in clay-rich rocks on Mars, according to a chemical analysis published in Nature Communications. Among them is a nitrogen-containing molecule with a structure similar to that of DNA precursors, according to a press release from the University of Florida. This organic matter may have been preserved for more than 3.5 billion years in Gale Crater, the article states.
A Japanese research team has identified the five nucleic bases (adenine, guanine, cytosine, thymine, and uracil)—which form the building blocks of DNA and RNA—in samples from the asteroid Ryugu, according to a study published in Nature Astronomy, which compares the composition of these samples with those from the asteroids Bennu and Orgueil. “The detection of various nucleic bases in asteroid and meteorite materials demonstrates their widespread presence throughout the solar system and reinforces the hypothesis that carbonaceous asteroids contributed to the prebiotic chemical inventory of the early Earth,” the authors write.
The adoption of policies promoting physical activity has increased over the last two decades, but there is limited evidence that these policies are being implemented, and physical inactivity has remained high during this period, says an article published in Nature Health. The study is based on an analysis of documents from 200 countries and interviews with 46 experts, including one from the ISGlobal research institute in Barcelona.
An international team involving ISGlobal has analyzed climate data from 50 editions of the Tour de France between 1974 and 2023. The results show that, during the month of July, the risk of heat stress has increased over the years, with the last decade seeing the highest number of extreme heat episodes. In the locations analyzed, the Tour has so far managed to avoid conditions of maximum risk to health, but according to the researchers, it has been "an extremely fortunate race. With record heat waves becoming more frequent, it seems only a matter of time before the Tour faces days of extreme heat stress that will test current safety protocols. The study, published in Scientific Reports, used the Tour de France as an example of the challenge that rising temperatures associated with climate change pose for the organization of sporting events in the summer.
The inclusion of transgender women in women's sports categories is a controversial decision. To compare body composition and physical fitness between transgender and cisgender women, a team from Brazil has conducted a meta-analysis encompassing 52 studies and 6,485 individuals, analysing these values before and after gender-affirming hormone therapy. Although trans women showed greater lean mass—an indicator of muscle mass—there were no significant differences in upper or lower body strength, nor in maximum oxygen consumption, compared to cis women one to three years after hormone therapy. ‘The current evidence is, for the most part, of low certainty and heterogeneous quality, but it does not support theories about the inherent athletic advantages of trans women over cis women,’ say the authors of the study, published in the British Journal of Sports Medicine.
A study based on models and data concludes that adverse health effects related to plastic emissions could more than double by 2040 if current practices do not change. The authors note that their model could not assess the potential impacts associated with many chemicals contained in plastics, nor with the microplastics and nanoplastics that form throughout their life cycle, due to a lack of data and “a serious lack of transparency regarding their composition.” The results are published in The Lancet Planetary Health.
A study published in Nature estimates that atmospheric microplastic emissions have been overestimated. The authors compared measurements of atmospheric microplastics from 76 studies conducted between 2014 and 2024 at various locations around the world with model simulations. According to the simulations, atmospheric microplastic concentrations were between 100 and 10,000 times lower than previously estimated.