Tootfinder

Appfigures: daily downloads of major VPN apps in India rose 49% on June 16 after India announced its Telegram ban; Proton and Turbo recorded largest increases (Jagmeet Singh/TechCrunch)
https://techcrunch.com/2026/06/18/telegram-ban-in-india-sparks-a…

Telegram ban in India sparks a rush to VPNs, rival apps | TechCrunch
Telegram argues India should block specific content, not an entire platform used by millions.

An ancient sandstorm recorded by supercritical climbing wind ripple strata in Gale crater, Mars: #Curiosity Finds Evidence of an Ancient Sandstorm: https://science.nasa.gov/photojournal/curiosity-finds-evidence-of-an-ancient-sandstorm/

Information Transport and Observability in Compressible Aerodynamics
Bo Zhang
https://arxiv.org/abs/2607.20177 https://arxiv.org/pdf/2607.20177 https://arxiv.org/html/2607.20177
arXiv:2607.20177v1 Announce Type: new
Abstract: Pressure measurements provide sparse but direct observations of compressible aerodynamic flows, yet how information about hidden aerodynamic parameters is transported through the flow and encoded in these observations remains poorly understood. Here, we investigate information transport and observability in compressible aerodynamics using a differentiable shock-capturing immersed-boundary solver. By propagating gradients through the full unsteady flow solution, an automatic-differentiation-based observability metric is introduced to quantify the sensitivity of sparse pressure measurements to unknown aerodynamic parameters and identify informative sensing locations for inverse learning. The results reveal that aerodynamic information is transported non-uniformly through the flow field, producing localized regions of high observability. Inverse-learning experiments further demonstrate that observability and learnability are related but distinct concepts: although highly observable probes generally facilitate accurate parameter recovery, the highest-observability probe is not consistently the most effective for parameter inference. Furthermore, both the flow regime and the airfoil geometry substantially influence the distribution of observability and the convergence behavior of inverse learning. These findings establish a quantitative framework for understanding how aerodynamic information is encoded in sparse measurements and demonstrate the potential of automatic differentiation for observability analysis, informative sensor selection, and aerodynamic inverse analysis.
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If you spray your yard with garlic to repel mosquitoes you might be inadvertently inhibiting the reproduction of other insects. I.e., garlic-based whole-yard sprays are not as "eco-friendly" as pesticide companies claim. That's my take-away from this lab study showing effects on mosquitoes, fruit flies, and wasps. #mosquitoes #garlic #insects #pesticides https://www.sciencedirect.com/science/article/abs/pii/S0092867426003387

Dak Prescott and Cowboys face nightmare scenario as rival team acquires 23-sack superstar https://www.sportingnews.com/ca/nfl/dallas-cowboys/news/dak-prescott-cowboys-hit-bad-news-after-rival-lands-23…

Never a dull day in cybersecurity, so check out today's Metacurity for the most critical developments you should know, including
--Anthropic restores Fable 5 and Mythos 5, launches Sonnet 5,
--China's Mythos rival fuels AI arms race,
--Taiwan probes claimed PChome hack,
--Alberta voter leak sparks lawsuit,
--Hackers breach DHS sharing network,
--Apple privacy feature exposes emails,
--Adobe fixes critical ColdFusion bugs,
--Crypto thieves…

Anthropic restores Fable 5 and Mythos 5, launches Sonnet 5
China's Mythos rival fuels AI arms race. Taiwan probes claimed PChome hack, Alberta voter leak sparks lawsuit, Hackers breach DHS sharing network, Apple privacy feature exposes emails, Adobe fixes critical ColdFusion bugs, Crypto thieves stole $76m in June, much more

Seahawks reveal Super Bowl 60 rings which include 'special button' https://www.nytimes.com/athletic/7354408/2026/06/12/seahawks-super-bowl-rings-design/

xAI launches Grok Build, an agentic CLI for coding, building apps, and automating workflows, in beta for SuperGrok Heavy subscribers (Carmen Arroyo/Bloomberg)
https://www.bloomberg.com/news/articles/2026-05-14/musk-s-xai-unve…

Surface Waves Alter Air Entrainment During Water Entry
Chase T. Gabbard, Mario Ibrahim, Joseph Quinton, Eli Silver, Jesse Belden, Daniel M. Harris
https://arxiv.org/abs/2607.20067 https://arxiv.org/pdf/2607.20067 https://arxiv.org/html/2607.20067
arXiv:2607.20067v1 Announce Type: new
Abstract: When a sphere crosses an air-water interface it can entrain a significant volume of air, a process relevant to numerous naval, industrial, and environmental settings. While air entrainment through sphere impact onto quiescent baths has been extensively studied, real-world interfaces are inherently unsteady, and the influence of surface waves is less understood. In this Letter, we systematically investigate the effect of interfacial geometry on the air entrained by impacting hydrophobic spheres onto an axisymmetric wavefield. By analyzing the resulting cavity across a wide parameter space, including wave phase, driving amplitude, and frequency, we reveal that local interface deformation dramatically alters air entrainment. This effect is driven by a geometric modulation of the splash curtain, which shifts the transition between cavity closure modes. We demonstrate that the influence of the waves is fully described by the local wave slope at the radius of the sphere, which alongside the Weber number We and Bond number Bo, establishes a foundational parametric framework for predicting air entrainment and cavity metrics across highly dynamic, real-world surfaces like the open ocean.
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Dynamic Evolution of Pore-scale Heterogeneity and Transport Conditions Control Mineral Dissolution Regimes
Jinlei Wang, Yongfei Yang, Martin J. Blunt, Branko Bijeljic
https://arxiv.org/abs/2605.18223 https://arxiv.org/pdf/2605.18223 https://arxiv.org/html/2605.18223
arXiv:2605.18223v1 Announce Type: new
Abstract: Mineral dissolution in porous media is classically partitioned into static regimes within the Pe-Da plane, but this framework fails to capture the dissolution behavior of structurally complex rocks. Using three-dimensional micro-continuum simulations on micro-CT images of three rock samples spanning a wide range of pore-space heterogeneity, we track the joint evolution of dissolution morphology, velocity distribution, and reaction rate. Our results reveal that initial flow heterogeneity controls accessibility of reactants, thereby controlling the dissolution regime,reshaping them as dynamic trajectories. Channeled dissolution emerges as a simultaneous reorganization of structure and flow, and the resulting permeability-porosity relationship cannot be captured by a single power-law. The effective power-law exponent increases with heterogeneity and changes over time, reaching a maximum of 9.8, 18.0, and 40.9 for the three samples. Consequently, the effective reaction rate falls one to three orders of magnitude below the uniform dissolution prediction, with the suppression scaling with flow heterogeneity due to mass transfer limitations in channeled dissolution.
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