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The universe caught suppressing cosmic structure growth

As the universe evolves, scientists expect large cosmic structures to grow at a certain rate: dense regions such as galaxy clusters would grow denser, while the void of space would grow emptier.

But University of Michigan researchers have discovered that the rate at which these grow is slower than predicted by Einstein’s Theory of General Relativity.

They also showed that as dark energy accelerates the ’s global expansion, the suppression of the cosmic structure growth that the researchers see in their data is even more prominent than what the theory predicts. Their results are published in Physical Review Letters.

Time Travel

Is time travel possible, and if it is, what sort of civilizations would result? We’ll explore the science that might permit it as well as the classic science fiction examples to see if they make sense.

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Credits:
Time Travel.
Episode 219, Season 6 E01

Written by:
Isaac Arthur.

Editors.

Alphaville — Forever Young (Official Music Video)

One it will be possible.


Watch the official music video for Alphaville — Forever Young (Version 1) from the 1984 album ‘Forever Young’

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Microplastics Infiltrate Every Organ, Including Brain, Study in Mice Shows

Scientists investigating the possible health effects of microplastics have uncovered some disturbing initial results in an experiment based on mice.

When old and young rodents drank microscopic fragments of plastic suspended in their water over the course of three weeks, researchers at the University of Rhode Island found traces of the pollutants had accumulated in every organ of the tiny mammal’s body, including the brain.

The presence of these microplastics was also accompanied by behavioral changes akin to dementia in humans, as well as changes to immune markers in the liver and brain.

The AI-assistant wars heat up with Claude Pro, a new ChatGPT Plus rival

On Thursday, AI-maker and OpenAI competitor Anthropic launched Claude Pro, a subscription-based version of its Claude.ai web-based AI assistant, which functions similarly to ChatGPT. It’s available for $20/month in the US or 18 pounds/month in the UK, and it promises five-times-higher usage limits, priority access to Claude during high-traffic periods, and early access to new features as they emerge.

Like ChatGPT, Claude Pro can compose text, summarize, do analysis, solve logic puzzles, and more.

Otto Group Teams Up with Boston Dynamics to Strengthen Logistics Operations

Strategic agreement calls for fleet of Boston Dynamics robots to be deployed across more than 20 facilities over the next two years, to position retailer for the future.

Hamburg, Germany / Waltham, MA, USA – September 11, 2023 – The Otto Group, one of the world’s largest e-commerce retailers, has signed a strategic agreement with Boston Dynamics, the global leader in mobile robotics, to continue automating its logistics operations. The plan is to deploy Boston Dynamics’ Spot® robots in more than 10 and Stretch™ robots in more than 20 of the group’s facilities over the next two years, beginning with Hermes Fulfilment. The deployment supports Otto Group’s efforts to improve safety, increase operational efficiency and address labor shortages for specific types of warehouse work and the agreement marks the first time both of Boston Dynamics’ commercially available robots will be deployed together at enterprise scale.

Under the terms of the agreement, Spot, the four-legged mobile robot from Boston Dynamics, will support tunnel inspections and predictive maintenance activities for operations equipment, including thermal monitoring, analog gauge reading and acoustic detection of pressurized air and gas leaks. The Spot fleet will also run autonomous missions, collecting data for machine learning models to support tasks like fire exit egress monitoring and detecting slight changes in storage racks to keep Otto Group’s warehouses even safer. In addition, the Otto Group will be utilizing Stretch, Boston Dynamics’ box-moving robot designed for warehouse applications. Stretch will begin unloading containers at 10 facilities next year, with the goal of having all sites operational by the end of 2025. Stretch, which is particularly useful for unloading heavy packages in the container sector, will provide technological support for physically demanding activities.

Machine learning masters massive data sets

A machine-learning algorithm demonstrated the capability to process data that exceeds a computer’s available memory by identifying a massive data set’s key features and dividing them into manageable batches that don’t choke computer hardware. Developed at Los Alamos National Laboratory, the algorithm set a world record for factorizing huge data sets during a test run on Oak Ridge National Laboratory’s Summit, the world’s fifth-fastest supercomputer.

Equally efficient on laptops and supercomputers, the highly scalable solves hardware bottlenecks that prevent processing information from data-rich applications in , , social media networks, national security science and earthquake research, to name just a few.

“We developed an ‘out-of-memory’ implementation of the non-negative matrix factorization method that allows you to factorize larger than previously possible on a given hardware,” said Ismael Boureima, a computational physicist at Los Alamos National Laboratory. Boureima is first author of the paper in The Journal of Supercomputing on the record-breaking algorithm.