world-records

The longest animal migrations ranked: Arctic terns, sooty shearwaters, gray whales, godwits, and leatherbacks, with tracking data and how they navigate.

Jakarta leads the UN's 2025 city ranking, yet Chongqing has more people inside its borders. See the biggest cities by city, urban area, and metro definition.

NEOM's $8.4B plant leads a wave of gigawatt-scale hydrogen projects reshaping fertilizer, steel, and shipping. Here's how the biggest ones actually work.