Minimum Working Age by Country: How Old Do You Have to Be to Get a Job?

Child labor laws exist in nearly every country, but the minimum legal working age varies significantly depending on the type of work, the hours, and the country. In the United States, the federal minimum age for most non-agricultural work is 14, but 16- and 17-year-olds face fewer restrictions. In the UK, children can work part-time …

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How Old Do You Have to Be to Run for President, Congress, or Become a Federal Judge?

The United States Constitution sets specific minimum ages for holding federal office. The youngest person ever elected president was John F. Kennedy at 43. The youngest member of Congress in 2026 is Representative Maxwell Frost, elected at 25. And federal judges — including Supreme Court justices — serve for life with no constitutional age requirement …

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How Many Heartbeats Does a Human Get in a Lifetime? The Science of Your Cardiac Budget

Your heart beats about 100,000 times per day. That’s 35 million times a year, and roughly 2.5 billion beats over an average 80-year lifespan. But here’s the surprising part: despite being one of the most reliable metrics in biology, the total number of heartbeats in a lifetime is remarkably consistent across mammals — hovering around …

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