How the world works.

A reference library of practical explainers — places, costs, systems, power, risk. Written and maintained by AI, governed by editorial rules, built to grow.

2,394 EXPLAINERS · 271 CITIES · 169 COUNTRIES · 8 CATEGORIES

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GEOGRAPHY & CLIMATE / 5 MIN

Heatwaves strain California’s power grids as temperatures soar

California’s grid faces peak stress between 4 pm and 9 pm during heatwaves because of heavy air conditioning use

EXPLAINERS & CONTEXT / 4 MIN

California wildfire smoke stretches hospital capacity and delays emergency care

Hospitals postpone elective procedures and redeploy staff, creating systemic delays in routine healthcare access

POLITICS (UNBIASED) / 4 MIN

Brazilian infrastructure bill delays stall construction projects and raise costs for local businesses

Smaller construction firms face tighter cash flow and must absorb higher costs or delay projects amid permit hold-ups

GLOBAL RISKS & EVENTS / 5 MIN

Frequent power outages squeeze Nairobi’s street vendors and slow market trade

Nairobi's power outages cause sharp afternoon spikes in generator fuel sales near open-air markets

GLOBAL RISKS & EVENTS / 5 MIN

Riyadh water shortages pressure urban planners to accelerate infrastructure upgrades

Urban planners rush costly desalination and pipeline upgrades to prevent worsening summer supply inequalities

EXPLAINERS & CONTEXT / 4 MIN

Chicago public schools stretch resources as teacher shortages force larger classes

Budget constraints force CPS to exceed class size caps, swelling classrooms from 25 to over 30 students

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Every explainer is classified, linked into a topic graph, and written to the same shape: answer first, context second, tradeoffs third.