How chaos and tendency to reach thermal equilibrium arise from fundamental laws of physics

Normally the word “chaos” evokes a lack of order: a hectic day, a teenager’s bedroom, tax season. And the physical understanding of chaos is not far off. It’s something that is extremely difficult to predict, like the weather. Chaos allows a small blip (the flutter of a butterfly wing) to grow into a big consequence (a typhoon halfway across the world),…

Astronomers Trace Mysterious Fast Radio Burst To Extreme, Rare Star

The first detection of a fast radio burst inside the Milky Way leads scientists back to a magnetar, partially solving a long-standing mystery. CNET reports: Sifting through a trove of radio telescope data in 2007, Duncan Lorimer, an astrophysicist at West Virginia University, spotted something unusual. Data obtained six years earlier showed a brief, energetic burst, lasting no more than 5…

Climate Disruption Is Now Locked In. The Next Moves Will Be Crucial.

America is now under siege by climate change in ways that scientists have warned about for years. But there is a second part to their admonition: Decades of growing crisis are already locked into the global ecosystem and cannot be reversed. From a report: This means the kinds of cascading disasters occurring today — drought in the West fueling historic wildfires…

Researchers track slowly splitting ‘dent’ in Earth’s magnetic field

A small but evolving dent in Earth’s magnetic field can cause big headaches for satellites. Source: https://earthsky.org/earth/researchers-track-dent-in-earths-magnetic-field…

‘We Won’t Remember Much of What We Did in the Pandemic’

Tim Harford, writing for Financial Times (not paywalled): Last spring, I returned from the holiday of a lifetime in Japan, and reflected on the richness of the memories it had generated. Time flew by while I was there, but in hindsight 10 days somewhere vividly new had produced more memories than 10 weeks back home. I likened the effect to the…