Tootfinder

Typhoons vacuum microplastics from ocean and deposit them on land, study finds #environment

Typhoons vacuum microplastics from ocean and deposit them on land, study finds
Tropical storms such as typhoons, hurricanes, and cyclones are Earth's most powerful weather systems. Born over warm oceans, they travel thousands of kilometers to land, traversing waters now polluted with plastics, from coastal runoff to the vast oceanic garbage patches.

🚨 🚨 Planet’s first catastrophic climate tipping point reached
https://www.theguardian.com/environment/2025/oct/13/coral-reefs-ice-sheets-amazon-rainforest-tipping-point-global-heating-scientists-report…

The last few Christmases, I've idly daydreamed about setting up a siphon to make it easier to water the tree. This year I finally did it, and I love it.
I have a small bucket tucked under a branch between the tree and the wall with a flexible piece of clear tubing running into the tree stand. Now instead of awkwardly laying down and filling the stand, I can just pour water into the bucket, up to the fill line I drew with a sharpie.

Early warning of critical transitions: distinguishing tipping points from Turing destabilizations
Paul A. Sanders, Robbin Bastiaansen
https://arxiv.org/abs/2510.01959 https://…

Early warning of critical transitions: distinguishing tipping points from Turing destabilizations
Current early warning signs for tipping points often fail to distinguish between catastrophic shifts and less dramatic state changes, such as spatial pattern formation. This paper introduces a novel method that addresses this limitation by providing more information about the type of bifurcation being approached starting from a spatially homogeneous system state. This method relies on estimates of the dispersion relation from noisy spatio-temporal data, which reveals whether the system is appro…

AC^0[p]-Frege Cannot Efficiently Prove that Constant-Depth Algebraic Circuit Lower Bounds are Hard
Jiaqi Lu, Rahul Santhanam, Iddo Tzameret
https://arxiv.org/abs/2509.16824 http…

AC^0[p]-Frege Cannot Efficiently Prove that Constant-Depth Algebraic Circuit Lower Bounds are Hard
We study whether lower bounds against constant-depth algebraic circuits computing the Permanent over finite fields (Limaye-Srinivasan-Tavenas, J. ACM 2025; Forbes, CCC 2024) are hard to prove in certain proof systems. We focus on a DNF formula that expresses that such lower bounds are hard for constant-depth algebraic proofs. Using an adaptation of the diagonalization framework of Santhanam and Tzameret (SIAM J. Comput. 2025), we show unconditionally that this family of DNF formulas does not ad…