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5 results for “cities”.

• Why Cities Are Where They Are — Rivers, Ports, Fords and Crossroads
  Almost every old city began as an answer to a practical question: where can two things meet, and one thing stop? Read a map of the world's cities and you can still see the original reasons — confluences, fords, estuaries, passes and springs — written in street names and city limits.
• What Makes a Disaster "Natural"? The Equation Behind Every Headline
  Earthquakes do not kill people; buildings do. Floods do not drown cities; houses in the wrong place do. Disaster science has carried one deceptively simple formula since the 1970s — hazard times exposure times vulnerability — and using it changes how every headline about catastrophe should be read.
• Reading Earth at Night — What City Lights Reveal About Us
  From orbit, darkness is not empty. Night-light imagery shows where people live, how borders really work, when festivals happen and how much of the sky we have lost — and one satellite band has been measuring it all, night after night.
• Coral Reefs: The Animal Cities That Build the Shallow Ocean
  Reefs cover less than one per cent of the seabed and host about a quarter of all marine species — built by a small animal in partnership with a single-celled farmer. Here is the biology of the structure, the arithmetic of bleaching, and why the 2023–2024 event was the largest on record.
• Cloudflare Anycast and What It Means for Global Availability
  Anycast puts your site in hundreds of cities behind one IP — it is the cheapest layer of "many doors" you can buy, and it is not the same thing as being unblockable.