DARPA is exploring the potential of growing large-scale biological structures (500+ meters) in microgravity, leveraging recent advances in metabolic engineering and biological self-assembly. The initiative aims to revolutionize space infrastructure by enabling the biological manufacturing of structures like space elevator tethers, orbital debris nets, and space station components.
A hands-on educational resource focused on block cipher cryptanalysis, with a particular emphasis on attacking AES. The course provides guided exercises and practical implementations rather than theoretical knowledge, making complex cryptography concepts more approachable.
A developer documents their journey of building a custom ergonomic keyboard from scratch, including PCB design, aluminum enclosure machining, and custom keycap creation. The project involved learning hardware design, electronics, and various manufacturing processes, resulting in a successful low-profile keyboard with custom-designed components.
Scaling systems or projects by a factor of 100 requires complete rethinking of approaches and methodologies, illustrated through examples like bridge construction. Each order of magnitude increase presents unique challenges, but adding two zeros fundamentally disrupts all aspects of the problem domain and demands entirely new solutions.
TigerBeetle rebuilt their documentation site from scratch, moving away from Docusaurus to achieve better performance, simplicity, and integration with their zero-dependency philosophy. The new implementation uses Zig and Pandoc, resulting in a 10x reduction in footprint while maintaining functionality and adding features like integrated search and offline capabilities.
A personal account details the development of the XB-70 Valkyrie supersonic bomber through the lens of a father's career at General Electric during the Cold War. The ambitious aircraft project, despite its technological advances, was ultimately reduced from a strategic bomber program to a research vehicle due to the rise of ballistic missiles. The narrative weaves together family history, technological innovation, and Cold War politics while following the father's professional evolution from farm boy to engineer.
David E. Weisberg chronicles the 80-year evolution of Computer-Aided Design (CAD) through extensive interviews with industry pioneers and detailed company histories. The comprehensive 650-page document covers CAD's development from its 1950s origins through the early 2000s, offering insights into the technology, companies, and individuals who revolutionized engineering design.
Penn State engineering student Divya Tyagi refined a century-old mathematical problem in wind turbine design, creating a simpler solution to Glauert's original work. Her addendum expands the analysis to include total force and moment coefficients acting on wind turbine rotors, enabling more efficient turbine designs. The breakthrough could significantly improve wind energy production, with even a 1% efficiency increase potentially powering an entire neighborhood.
Princeton Engineering researchers demonstrated AI's ability to design complex wireless chips in hours instead of weeks, creating more efficient designs that humans find difficult to comprehend. The AI-generated chips, focusing on millimeter-wave technology, achieved superior performance by taking unconventional approaches and discarding traditional templates. While promising, the process still requires human oversight to address potential design failures.
The ring cryptography package maintenance status underwent changes, initially being declared unmaintained but later receiving security-focused maintenance from the rustls team. The advisory highlights potential security implications for users of the ring crate, with the rustls team committed to addressing critical security issues.