Researchers Map Earth's Longest Straight-Line Paths Over Water and Land

A 2018 study published on arXiv investigated the longest theoretically possible straight-line paths traversable entirely over water or entirely over land on Earth. Researchers applied computational and geometric methods to identify these extreme routes across the globe. The longest all-water path and the longest all-land path were calculated as part of the findings. The study attracted renewed attention on Hacker News, where it garnered community discussion. Such research highlights the intersection of geography, mathematics, and computational problem-solving.