The salt of the comet

Under the leadership of astrophysicist Kathrin Altwegg, Bernese researchers have found an explanation for why very little nitrogen could previously be accounted for in the nebulous covering of comets: the building block for life predominantly occurs in the form of ammonium salts, the occurrence of which could not previously be measured. The salts may be … Read more

Physics shows that imperfections make perfect

Northwestern University researchers have added a new dimension to the importance of diversity. For the first time, physicists have experimentally demonstrated that certain systems with interacting entities can synchronize only if the entities within the system are different from one another. This finding offers a new twist to the previous understanding of how collective behavior … Read more

Global aromaticity at the nanoscale

The concept of aromaticity is central to organic chemistry and it is widely used to interpret the structure and reactivity of small molecules. This article shows that global aromaticity can arise in molecular rings as large as proteins. Hückel’s rule was formulated in 1931 by considering molecules with up to 6 π-electrons. A new Oxford’s … Read more

UofT researchers find: Most engineered nanoparticles enter tumours through cells, not between them

The prevailing theory in cancer nanomedicine — an approach that enables more targeted therapies than standard chemotherapy — has been that nanoparticles mainly diffuse passively into tumours through tiny gaps between cells in the endothelium, which lines the inner wall of blood vessels that support tumour growth. The researchers previously showed that less than one per … Read more

Density-compensated overturning in the Labrador Sea

A recent study finds that the observed weak linkage between the Labrador Sea convection, a process that mixes surface waters to depth, and the Atlantic Meridional Overturning Circulation (AMOC), a basin-scale circulation critical to the climate system, can be attributed to the density compensation by temperature and salinity. Using observational and reanalysis data, this study … Read more

‘Melting rock’ models predict mechanical origins of earthquakes

Engineers at Duke University have devised a model that can predict the early mechanical behaviors and origins of an earthquake in multiple types of rock. The model provides new insights into unobservable phenomena that take place miles beneath the Earth’s surface under incredible pressures and temperatures, and could help researchers better predict earthquakes — or … Read more

How sensitive can a quantum detector be?

Quantum physics is moving out of the laboratory and into our everyday lives. Despite the big headline results about quantum computers solving problems impossible for classical computers, technical challenges are standing in the way of getting quantum physics into the real world. New research published in Nature Communications from teams at Aalto University and Lund University hopes … Read more