An international research team led by the University of Göttingen is making strides in improving cutting-edge technologies like solar cells with a groundbreaking new technique. For the first time, the formation of dark excitons—tiny, challenging-to-detect particles—can now be tracked with unprecedented precision in both time and space. This breakthrough has important implications for the development of future solar cells, LEDs, and detectors. The results are published in Nature Photonics.

Dark excitons are pairs consisting of an electron and the “hole” it leaves behind when it is excited. These particles carry energy but cannot emit light, which is why they are termed “dark.” To visualize an exciton, imagine a balloon (representing the electron) that flies away, leaving behind an empty space (the hole) connected by a Coulomb interaction force. Although these particle states are notoriously difficult to detect, they play a crucial role in atomically thin, two-dimensional structures in special semiconductor compounds.

Researchers at the University of Galway have developed a groundbreaking bioprinting technology that enables the creation of tissue capable of self-organization through cell-generated forces. This innovative approach mimics the natural processes of organ development, offering new possibilities for producing functional, bioprinted organs. The findings were published in the journal Advanced Functional Materials and could pave the way for advancements in disease modeling, drug testing, and regenerative medicine.

Led by the School of Engineering and the CÚRAM Research Centre for Medical Devices, the team’s research focused on replicating heart tissue, with the aim of advancing bioprinted organs that could be used for a variety of medical applications. Their technology employs a unique “bio-ink” that contains living cells and encourages their growth, differentiation, and adhesion, facilitating the development of tissue that is more representative of natural organ function.

In a groundbreaking experiment, researchers in China have successfully created mice with DNA from two fathers—marking a major step in genetic science and our understanding of a curious biological phenomenon called imprinting. This achievement, led by Zhi-Kun Li and his team at the Chinese Academy of Sciences in Beijing, utilized CRISPR gene-editing technology to bypass the usual genetic limitations of having one father and one mother. While this approach holds promise for advancing the study of imprinting, humans are not yet the focus of this research.

Imprinting refers to a genetic phenomenon where certain genes are expressed differently depending on whether they come from the mother or the father. For healthy development, animals need to inherit a “dose” of these genes from both parents, and both doses must work together. Without the proper balance, the expression of these genes can go awry, leading to abnormal embryos. In the case of creating mice with two fathers, previous experiments failed because both the paternal and maternal genomes contribute to proper gene expression, making the development of a healthy embryo difficult.

In the ongoing battle against PFAS, or “forever chemicals,” bacteria may hold the key to solving one of the most persistent environmental challenges of our time. While traditional remediation methods often focus on containing or capturing these chemicals, a breakthrough discovery by a research team led by the University at Buffalo reveals that certain bacteria can actually dismantle the chemical bonds that make PFAS so indestructible.

The researchers found that a strain of bacteria, Labrys portucalensis F11 (F11), is capable of breaking down and transforming at least three types of PFAS. More impressively, this strain also has the ability to degrade some of the toxic byproducts produced during the breakdown process. Published in Science of the Total Environment, the study demonstrates that F11 can metabolize more than 90% of perfluorooctane sulfonic acid (PFOS) in just 100 days, one of the most widely used and hazardous PFAS compounds. PFOS was officially classified as hazardous by the U.S. Environmental Protection Agency (EPA) in 2022.

In less than a decade, the need for sex to produce a baby could be a thing of the past, opening up possibilities for same-sex couples and even multi-partnered relationships to have biological children. A recent meeting by the Human Fertilisation and Embryology Authority (HFEA) revealed that scientists are nearing a breakthrough in growing human eggs and sperm in the lab. This monumental shift in reproductive science could change the way we think about family, sex, and genetics, but it also raises ethical questions and concerns about its potential societal impact.

At the meeting, HFEA officials discussed the rapid progress being made in the field of in vitro gametogenesis (IVG)—the process of reprogramming stem cells or even skin cells to function like eggs or sperm cells. This revolutionary advancement is already showing success in animals, with the creation of babies from two male mice and even the possibility of a child from two biological fathers. Experts believe that bridging the gap from mice to humans could take as little as two to ten years, potentially opening the door to lab-grown human embryos with the genetic material from multiple parents.

SEALSQ, a Swiss semiconductor company, is making waves in the world of cybersecurity by unveiling what it claims to be the “world’s first” quantum-resistant secure hardware. This breakthrough represents a significant leap forward in post-quantum cryptography, providing a future-proof solution to secure sensitive data in the era of quantum computing.

Specializing in integrated semiconductor solutions, PKI (Public Key Infrastructure), and provisioning services, SEALSQ has been at the forefront of developing both hardware and software designed to withstand quantum attacks. With quantum computing advancements on the horizon, current encryption methods face the risk of being rendered obsolete. Traditional cryptographic systems, such as RSA and Elliptic Curve Cryptography (ECC), could eventually be broken by powerful quantum computers, putting sensitive financial transactions and personal data at risk.