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4 results for “disasters”.

• 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.
• What Causes a Tsunami, and How Warnings Work
  A tsunami is not a wave in the ordinary sense — it is the whole ocean being displaced at once. Understanding what sets one off, why it looks harmless in deep water, and how minutes of warning can save lives, is the difference between curiosity and survival.
• How Volcanoes Form and Why They Erupt
  Most of the world's volcanoes sit in two great belts, and where they erupt tells you almost everything about the plate tectonics underneath. Here is where magma comes from, why some volcanoes ooze and others explode, and how the map of eruption mirrors the map of plates.
• How Earthquakes Are Measured: Magnitude Versus Intensity
  "A 7.0 earthquake" and "very strong shaking here" are two different measurements answering two different questions. Here is the logarithmic maths of magnitude, why the Richter scale was replaced, and what intensity really tells you.