The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts Last week’s replies: What would be the most useful superpower? It’s clear that the world as it is – considering the climate...

Source: [Guardian International](https://www.theguardian.com/lifeandstyle/2026/sep/20/which-leader-from-history-does-the-world-need-now)

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