Population

const res = await fetch(
  `https://kosis.kr/openapi/Param/statisticsParamData.do?method=getList&apiKey=${process.env.KOSIS_API_KEY}&itmId=T+&objL1=ALL&format=json&jsonVD=Y&prdSe=Y&startPrdDe=2022&endPrdDe=2023&orgId=101&tblId=DT_1IN1502`
);
const data = await res.json();
data.slice(0, 3).forEach(d => console.log(`${d.C1_NM}: ${d.DT}`));

const res = await fetch(
  'https://population.un.org/dataportalapi/api/v1/data/indicators/49/locations/900/start/2020/end/2024?format=json'
);
const { data } = await res.json();
data.slice(0, 5).forEach(d => console.log(`${d.timeLabel}: ${(d.value / 1e9).toFixed(2)}B people`));

const res = await fetch(
  `https://api.census.gov/data/2022/acs/acs1?get=NAME,B01003_001E&for=state:*&key=${process.env.CENSUS_API_KEY}`
);
const [header, ...rows] = await res.json();
rows.slice(0, 5).forEach(r => console.log(`${r[0]}: ${Number(r[1]).toLocaleString()} people`));

// Worldometers has no official API — use public data or a wrapper
const res = await fetch('https://disease.sh/v3/covid-19/all');
const { population, cases, deaths } = await res.json();
console.log(`World population: ${population.toLocaleString()}`);
console.log(`Total COVID cases: ${cases.toLocaleString()}`);