The most enigmatic structure in cell biology: the Vault. Often missing from science text books, it has been 40 years since the discovery of these giant, half-empty structures, produced within nearly every cell, of every animals, on the planet.

The physics of 16 uncoupled pendulums [📹 Marcel Clemens]

The WOW! Signal received from space in 1977

Chronic subjective tinnitus, the debilitating and persistent perception of internal phantom sounds in the absence of an external acoustic source, affects a significant percentage of the global population and has historically presented a profound therapeutic challenge for modern otolaryngology. This phantom auditory perception often arises from maladaptive neuroplasticity within the central auditory pathways, where damaged or under-stimulated hair cells in the cochlea prompt subcortical structures, specifically the inferior colliculus and auditory cortex, to become hyperactive and generate spontaneous synchronized firing patterns. Recent clinical breakthroughs in auditory neuroscience have successfully targeted this hyper-synchrony utilizing bimodal neuromodulation, an innovative therapeutic strategy that pairs non-invasive acoustic stimulation with micro-electrical somatosensory pulses delivered directly to the lingual nerve on the dorsal surface of the tongue. By driving concurrent inputs into the brain's multisensory integration centers, this dual-channel approach leverages the natural capacity of the central nervous system for neuroplastic reorganization, systematically retraining neural circuits to suppress and ignore the erroneous, hyperactive auditory signaling. The clinical efficacy and long-term durability of this bimodal protocol were rigorously validated in a landmark, large-scale randomized clinical trial involving over 300 adult participants suffering from moderate-to-severe chronic subjective tinnitus. Over a twelve-week intervention period, participants utilized a specialized take-home medical device consisting of high-fidelity headphones paired with a custom intraoral lingual array, which delivered synchronized auditory tones alongside micro-amp electrical pulses that subjects described as a benign, sparkling fizzing sensation on the tip of the tongue. Upon completion of the primary treatment regimen, more than 86% of compliant individuals demonstrated a statistically and clinically significant reduction in symptom severity, as measured by standardized metrics including the Tinnitus Handicap Inventory and the Tinnitus Functional Index. Remarkably, follow-up evaluations confirmed that these therapeutic improvements were stably maintained for up to twelve months post-treatment, establishing this non-invasive modality as a major paradigm shift in durable, long-term neuro-otological care. The underlying neurobiological mechanism driving this sustained symptom suppression centers on the concept of spike-timing-dependent plasticity within the dorsal cochlear nucleus, where somatosensory projections from the trigeminal system anatomically converge with primary auditory fibers. By precisely aligning the timing of the electrical lingual pulses with broad-spectrum acoustic sweeps tailored to the individual's specific tinnitus pitch profile, the bimodal stimulation disrupts the aberrant, self-reinforcing neural loops that sustain the phantom sound. This targeted cross-modal input forces the hyperactive auditory neurons into a state of long-term depression, effectively dampening their spontaneous firing rate and restoring normal inhibitory gating mechanisms within the thalamus. As subsequent clinical trials continue to optimize the specific timing intervals and long-term dosing protocols of this non-invasive platform, bimodal neuromodulation stands to replace passive masking devices and palliative counseling strategies, providing a safe, target-specific, and biologically grounded solution for millions of individuals seeking lasting relief from chronic phantom sound. [Conlon, B., et al. (2020). Bimodal neuromodulation combining sound and tongue stimulation for tinnitus treatment: A large-scale randomized clinical trial. *Science Translational Medicine*, 12(564), eabb2830]

Artist David Spriggs is known for his ephemeral installations that layer transparent images to create the illusion of a three-dimensional landscape.

This meteorite slice unveils a stunning crystal structure: the Widmanstätten pattern, a geometric array of interlocking nickel-iron crystals that formed slowly in an asteroid's core over billions of years.