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Ice core from secret US Army base reveals historical Greenland ice-sheet melting

Looking for Interstellar Monuments

In Defense of the Psychologically Rich Life

George Laurer, Who Developed the Bar Code, Is Dead at 94

You don’t need confidence, just contribution

Radio jet blasts seen as supermassive black hole rips star apart over 10 years

A history of big-headedness – How humans got their brains

Pluto's dunes snapped by NASA's New Horizons are made from frozen methane

The best time of day – and year – to work most effectively

Jay W. Forrester Dies at 98; a Pioneer in Computer Models

Power of positive thinking skews mindfulness studies

Early Retirement in the N.F.L. and at Google, and the Paradox of Success

A Billionaire Mathematician’s Life of Ferocious Curiosity