Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.
Advances in organ and computer models are raising the prospect that some animal experiments could be eliminated. But there are still huge hurdles to overcome.
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Snapchat has been adding more tools for influencers to build audiences, most recently launching individual creator subscriptions. An awards show seems to be part of that same agenda, spotlighting popular personalities from many different fields. There will be Snappys handed out for categories such as Spotlight MVP, Best Storyteller and Breakout Creator of the Year, plus awards for collaboration, cultural impact and success in single subjects.