Black holes account for only small fraction of dark matter Contradicting earlier theories, massive black holes are made of a small percentage of dark matter. A team used gravitational microlensing to monitor nearly 80 million stars over 20 years, finding only 13 microlensing events, which indicates that other factors could explain the gravitational waves found […]
The development of luminescent organic radicals has resulted in materials with excellent optical properties for near-infrared (NIR) emission, like organic light-emitting diodes (OLEDs). Light generation in this range could be used for healthcare diagnosis and treatment to surveillance, communications and other security applications. Although an external quantum efficiency greater than 20% in electroluminescence has been […]
Acute myeloid leukemia (AML) is a stem cell disease caused by the massive mobilization and differentiation arrest in primordial granulocytes. AML is characterized by a low survival rate and high recurrence . Although differentiation-induction therapy represents an innovative treatment strategy for AML , many problems still exist, including irreversible resistance, toxic effects, and limitations of […]
Chemical engineering • Food processing • Materials • Mechanical Engineering • Nanotechnology
Imagine a close basketball game that comes down to the final shot. The probability of the ball going through the hoop might be fairly low, but it would dramatically increase if the player were afforded the opportunity to shoot it over and over. A similar idea is at play in the scientific field of membrane […]
Pain is highly personal. What to some doesn’t even deserve the name, for others can be unbereable. Now, we just discovered a difference in how we feel it: men and women have different pain receptors. Recent research has demonstrated in rodents and, importantly, primates including humans, that there are sex differences in pain receptors, also […]
Newfound ancient reptile suggests complex ecosystems Paleontologists have uncovered a previously unknown species of small land reptiles, Parvosuchus aurelioi, that lived about 237 million years ago, walked on four legs and used bladelike teeth to tear flesh. “The presence of this small predator among fossils of much larger predators suggests that these ecosystems, where Brazil […]
Topology has been at the forefront of condensed matter physics for the past two decades, influencing our understanding of quantum materials and phenomena. More recently, it has however become clear that a more general concept, that of quantum geometry, manifests itself in a series of quantum phenomena involving flat electronic bands. In condensed matter physics […]
Author: Ambuj Tewari, Professor of Statistics, University of Michigan Over 100 years ago, Alexander Graham Bell asked the readers of National Geographic to do something bold and fresh – “to found a new science.” He pointed out that sciences based on the measurements of sound and light already existed. But there was no science of […]
About 2.5 billion years ago, free oxygen, or O2, first started to accumulate to meaningful levels in Earth’s atmosphere, setting the stage for the rise of complex life on our evolving planet. Scientists refers to this phenomenon as the Great Oxidation Event, or GOE for short. But the initial accumulation of O2 on Earth was […]
Angela Potochnik’s Idealization and the Aims of Science is probably one of the most interesting and ambitious philosophy of science books of the last years. It offers a picture of scientific knowledge and of its production that elaborates on, and wisely amends, some of the best literature in the recent ‘pragmatist’ tradition of philosophy of […]