The vernal equinox heralds the arrival of spring in the Northern Hemisphere. But have you heard the myth about balancing an egg on its end? Freelance writer Amanda C. Kooser covers gadgets and tech ...
Students in Greece will revive Eratosthenes' calculation of the Earth’s radius and circumference, a remarkable experiment in ...
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When is the first day of spring?
The first day of spring 2026 in the Northern Hemisphere arrives with the equinox on March 20. Here's when and why the seasons change ...
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