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SUBSCRIBE: Apple | Spotify Anusuya Chinsamy-Turan: So, yeah, so very unlike a bird that you typically think of sitting at a bird feeder—you know, definitely not that kind of bird. Flora Lichtman: I’m Flora Lichtman, with Scientific American’s Science, Quickly. Today: Episode Three of our four-part Fascination on really big birds. We’re going on a gargantuan goose chase. Chinsamy-Turan:  I love talking about these big birds because, as you see, most people, you know, think ostrich, and they think that’s big. But…

The 14-sided polygon Tile(1, 1), shown on the left, is a weakly chiral aperiodic monotile: if by fiat we forbid tilings that mix unreflected and reflected tiles, then it admits only non-periodic tilings. By modifying its edges, as shown in the center and right for example, we obtain strictly chiral aperiodic monotiles called "Spectres" that admit only non-periodic tilings even when reflections are permitted. Credit: arXiv (2023). DOI:…

Credit: Unsplash/CC0 Public Domain Researchers from University of Connecticut, Texas A&M University, University of Colorado at Boulder, and University of Florida published a new Journal of Marketing article that examines whether price promotions on some products differentially impact demand for other products depending on their relative locations within a display. …

Deep, deep in geologic time, some 600 million or 700 million years ago, the very first animals evolved on Earth. Their closest relatives that still live today include sponges, sea anemones and comb jellies. But exactly which of these is truly the closest relative to the very first animals has remained one of the most contentious questions in evolutionary biology. With few fossils of these early, squishy animals, their history has necessarily been muddy, and it has been challenging to reconstruct what happened. A study…

Swedish EV maker Polestar released its third annual sustainability report showing it had reduced relative CO2 emissions by 8% per car sold – during a year of record growth in 2022. Polestar cuts CO2 emissions during record growth Polestar delivered 51,491 vehicles in 2022, up 80% from 2021 and beating its 50,000 annual global volume target. Despite the impressive growth, Polestar managed to reduce relative CO2 emissions for each vehicle sold by 8% compared to 2021 levels. Due to…

Microsoft Excel, sometimes known as MS Excel, is a potent spreadsheet programme. In Excel, each worksheet consists of a number of cells that are made up of rows and columns. Each cell has a unique reference, which enables users to quickly access and address the required cell (or cells) within the functions. In Excel, cell references are crucial, particularly when working with huge data sets in functions and formulas.This article covers a quick overview of Excel Cell References. The various sorts of cell references that…

As thunder boomed and dark rain clouds gathered on the last day of the field season in Kenya in 2017, paleoanthropologist Emma Finestone was rushing to record the location of fossils while excavators were hoisting an ancient hippo skeleton out of the ground. “I was worried she would get struck by lightning because she was on top of a hill,” says Tom Plummer, a paleoanthropologist at Queens College who led the excavation at Nyayanga, near Lake Victoria. Finestone…

Introducing the MAE and MSE of “relative” performance metricsPhoto: William Warby on Unsplash.In the forecasting world, and the ML and Statistics worlds more generally, performance metrics play a critical role.They’re used during model fitting, hyperparameter tuning and model selection to find the best possible model for your data; and they are used to understand and explain how well your model predicts the future, in absolute terms.In this post, my aim is to convince you that for many forecasting¹ problems, you should…

The Galaxy Galaxy S23 series announcement date is already set for February 1, so we expect leak intensity to increase even more. The latest intel comes in the form of a picture of dummies of the three phones. While not telling us much about their hardware, it gives us a good idea of their relative size. Also, the design is once again confirmed for all three. There seems to be zero change in the S23 Ultra's body while the smaller siblings adopt a rear panels in line with the top dog with no camera island and only…

Many believe our particularly large brain is what makes us human – but is there more to it? The brain's shape, as well as the shapes of its component parts (lobes) may also be important.Results of a study we published today in Nature Ecology & Evolution show that the way the different parts of the human brain evolved separates us from our primate relatives. In a sense, our brains never grow up. We share this "Peter Pan syndrome" with only one other primate – the Neanderthals.Our findings provide insight into what…