How can the Universe be expanding at two distinct rates? This enigma, named the Hubble tension, has puzzled astronomers for several years. The origin of this tension lies in the discrepancy ...

Prepared for the Edward Elgar Handbook of Research Methods and Applications in Empirical Macroeconomics, 2nd ed. The chapter demonstrates how the RISE toolbox can be used to specify, solve, estimate, ...

In 1945, as the first atomic bomb exploded in the New Mexico desert, Enrico Fermi stood miles away, holding a few scraps of paper. As the shockwave rolled toward him, he dropped the papers and watched ...

Discover why some puzzles stump supersmart AIs but are easy for humans, what this reveals about the quest for true artificial general intelligence — and why video games are the next frontier. When you ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Accounting for selection effects in supernova type Ia (SN Ia) cosmology is crucial for unbiased cosmological parameter inference -- even more so for the next generation of large, mostly ...

Sandra Benallie, Tayden Bitsoie and Sage Yazzie, participants in USU's 2025 Native American Summer Mentorship Program, tackled a classic Fermi problem to hone estimation skills with guidance from USU ...

The terms Agile and estimations don't align perfectly. Agile is all about responding to change rather than following a plan, while accurate estimations require a fixed plan that doesn't change. It's a ...