Lifeboat Foundation

Genetic tests using museum specimens suggest that the Xerces blue was a distinct species and that it disappeared in 1941.

Painkillers have nasty side effects, such as organ damage or addiction. Researchers have discovered a new drug that may cause none of these.

A common theme among parents and family members caring for a child with the rare Batten disease is “love, hope, cure.” While inspiring levels of love and hope are found among these amazing families, a cure has been more elusive. One reason is rooted in the need for more basic research. Although researchers have identified an altered gene underlying Batten disease, they’ve had difficulty pinpointing where and how the gene’s abnormal protein product malfunctions, especially in cells within the nervous system.

Now, this investment in more basic research has paid off. In a paper just published in the journal Nature Communications, an international research team pinpointed where and how a key cellular process breaks down in the nervous system to cause Batten disease, sometimes referred to as CLN3 disease [1]. While there’s still a long way to go in learning exactly how to overcome the cellular malfunction, the findings mark an important step forward toward developing targeted treatments for Batten disease and progress in the quest for a cure.

The research also offers yet another excellent example of how studying rare diseases helps to advance our fundamental understanding of human biology. It shows that helping those touched by Batten disease can shed a brighter light on basic cellular processes that drive other diseases, rare and common.

Helicobacter pylori (H. pylori) infections are commonly associated with abdominal pain, bloating, and acidity. Clinical evidence suggests that infection with H. pylori cagA⁺ strains dramatically increases the risk of developing gastric cancer.

A specialized protein delivered by H. pylori to the host, oncoprotein “CagA,” has been shown to interact with multiple host proteins and promote gastric carcinogenesis (transformation of normal cells to cancer cells). However, the underlying mechanisms associated with its biochemical activity have not been fully determined yet.

A new study published in Science Signaling on 18 July insights into the additional mechanism of oncogenic CagA action.

Extracellular vesicles in people with nonalcoholic fatty liver disease (NAFLD) encourage colorectal cancers to spread to the liver and prevent immune cells from attacking the metastatic tumors.

A proton-driven approach that enables multiple ferroelectric phase transitions sets the stage for ultralow power, high-capacity computer chips.

A proton-mediated approach that produces multiple phase transitions in ferroelectric materials could help develop high-performance memory devices, such as brain-inspired, or neuromorphic, computing chips, a KAUST-led international team has found. The paper is published in the journal Science Advances.

Ferroelectrics, such as indium selenide, are intrinsically polarized materials that switch polarity when placed in an electric field, which makes them attractive for creating memory technologies. In addition to requiring low operating voltages, the resulting memory devices display excellent maximum read/write endurance and write speeds, but their storage capacity is low. This is because existing methods can only trigger a few ferroelectric phases, and capturing these phases is experimentally challenging, says Xin He, who co-led the study under the guidance of Fei Xue and Xixiang Zhang.

Waveguiding scheme enables highly confined subnanometer optical fields.

Researchers have pioneered a novel method for confining light to subnanometer scales. This development offers promising potential for advancements in areas such as light-matter interactions and super-resolution nanoscopy.

Advancements in Light Confinement Technology.

Flying cars. Space tourism. Safe reentry for astronauts coming back from Mars.

These technologies are still science fiction, but some won’t be for much longer, according to Charles “Mike” Fremaux, NASA Langley Research Center’s chief engineer for intelligent flight systems.

To test these concepts, particularly in regard to public and military safety, NASA Langley is building its first new wind tunnel in over 40 years. The NASA Flight Dynamic Research Facility, a project Fremaux has been pursuing for 25 years, will replace two smaller wind tunnels that are around 80 years old. The center’s most recent and largest, the National Transonic Facility, was built in 1980.

DNA-programmed self-assembly leverages the chemical specificity of DNA hybridization to stabilize user-prescribed crystal structures^1,2. Pioneering studies have demonstrated that DNA hybridization can guide the self-assembly of a wide variety of nanoparticle crystal lattices, which can grow to micrometer dimensions and contain millions of particles^{3,4,5,6,7,8,9}. Attention has now turned toward the goal of assembling photonic crystals from optical-scale particles (i.e., roughly 100‑1000 nm in diameter)^10,11,12 using DNA-programmed interactions. To this end, progress over the past decade has established that DNA can indeed program the self-assembly of bespoke crystalline structures from micrometer-sized colloidal particles^{13,14,15,16,17,18,19}. However, growing single-domain crystals comprising millions of DNA-functionalized, micrometer-sized colloidal particles remains an unresolved barrier to the development of practical technologies based on DNA-programmed assembly. Prior efforts have yielded either single-domain crystals no more than a few dozen micrometers in size^13,14,15,16 or larger polycrystalline materials with heterogeneous domain sizes^12,15,17,20. These features—small crystal domains, polycrystallinity, and size dispersity—have therefore precluded the use of DNA-coated colloidal crystals in photonic metamaterial applications.

Assembling macroscopic materials from DNA-functionalized, micrometer-sized colloids is challenging due to the vastly different length scales between the DNA molecules and the colloidal particles (Fig. 1a). This combination leads to crystallization kinetics that are extremely sensitive to temperature and prone to kinetic trapping^1,21,22,23. The resulting challenges are both practical and fundamental in nature. For example, recent work has shown that crystal nucleation rates can vary by orders of magnitude over a temperature range of only 0.25 °C¹⁹. Extremely precise temperature control would therefore be required to self-assemble single-domain crystals from a bulk solution (Fig. 1b). At the same time, annealing polycrystalline materials is difficult due to the combination of the short-range attraction and the friction arising from the DNA-mediated colloidal interactions, which slows the rolling and sliding of colloidal particles at crystalline interfaces^15,19,24,25.