Vastkind is a newsletter of explanatory essays on AI, robotics, longevity, energy and society, with careful reporting on research and technical developments. Its sample issues walk readers through specific studies and engineering problems with clear context and caveats.

A newsletter from a former New York Times journalist and health coach covering strength training, nutrition and longevity, with video demonstrations, quick whole-food recipes and occasional audio essays. It mixes critical commentary on health media and longevity hype with practical training and cooking guidance.

Independent investment research covering longevity biotech, diagnostics, robotics and alternative energy, with structured TL;DR, problem, solution and thesis sections. Issues weigh company catalysts, trial data and financials against what has not yet been proven.

Parallax publishes a multi-part Health & Longevity series covering stress physiology, Zone 2 training, contrast therapy, yoga and, soon, fasting and aging. Each piece combines research citations with an essayistic argument about how modern life overloads the nervous system.