The recent COVID-19 pandemic has demonstrated the vulnerabilities of our society to infectious diseases and the limitations of the tools available for viruses detection. Polymerase chain reaction (PCR) and antigens tests have been useful to monitor and contain the extension of the last pandemic, however it demonstrated to have severe limitations. PCR is a highly […]
roof Concrete sidewalks, black asphalt streets, traffic, brick and steel buildings. These common city elements can retain heat and increase temperatures in a phenomenon called the urban heat island effect. With increasingly warming temperatures during the summer months, urban cities like Chicago need to arm decision makers and communities with information about strategies to help […]
One of the biggest challenges of medical imaging technologies is actually resolving the structures of interest, be it a tumour, a lung or a blood vessel, without the “noise” from other bodily parts like skin or muscle. A new imaging technique allows for visualisation inside intact animals at higher resolution than ever before. A team […]
The intricate relationship between lattice geometry and topological electronic behaviour determines the ground state properties of materials. The non-trivial band topology of the kagome lattice – it consists of the vertices and edges of the trihexagonal tiling – is being extensively explored as candidates to engineer Dirac fermions, topological flat bands, magnetic Weyl semimetals or […]
Billions of tiny particles packed into rechargeable lithium-ion battery electrodes are responsible for storing charge and making it available when it’s needed to do work. X-ray movies of this process show the particles absorbing and releasing lithium ions as the battery charges and discharges. Now, in an important step forward, researchers have used a type […]
Magnons or spin waves are elementary quasiparticles, which represent a collective motion of magnetic moments in ordered systems. Spin waves can propagate in materials and therewith transport a spin current. This spin flow requires no electrical charge transport and therefore no electrical losses creating Joule heating. Spin waves enclose a wide frequency range, from gigahertz […]
As the Earth’s human population grows, greenhouse gas emissions from the world’s food system are on track to expand. A new study demonstrates that state-of-the-art agricultural technology and management can not only reduce that growth but eliminate it altogether by generating net negative emissions – reducing more greenhouse gas than food systems add. Employing additional […]
Computer science • Language • Linguistics • Medicine • Robotics
At a time when the mass media are full of predictions about the apocalyptic effect that AI will have on humanity, it is comforting to read two essays that show that the reality, for the moment, points in the opposite direction. The first of these reveals the excellent results that the application of natural language […]
We all know what glass is, don’t we? We just point to the nearest window and it is that transparent sheet. Humans have been producing glass for at least 6,000 years, way before they knew how to smelt iron. Actually, the chemistry is well known: to produce window glass we just heat a mixture of […]
Health • Medicine • Physiology • Psychology
gender gap Sleep experts recommend that adults sleep 7-9 h per night (7-8 h for older adults). However, about 30-35% of adults sleep less than 7 h and prevalence rates of short or insufficient sleep are increasing. Insufficient sleep is not in itself a diagnosable disorder; however, its high prevalence highlights a key target for […]