Observed on March 23, World Meteorological Day recognizes the science of weather, climate and water, and the experts who help people prepare for changing conditions.

The date marks the 1950 establishment of the World Meteorological Organization, which coordinates global forecasting and climate efforts. Meteorology affects everything from daily forecasts and flight planning to farming, shipping and disaster response. Modern forecasting has improved dramatically thanks to satellites, radar, computer models and international data sharing.

The holiday highlights how weather science helps protect lives, support economies and improve planning in a world facing stronger storms, shifting climate patterns and growing environmental risks.

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The first recorded use of “OK” in print appeared on March 23, 1839, in the Boston Morning Post, launching one of the most widely recognized words in the world.

The abbreviation was part of a humorous trend of intentionally misspelled phrases used by newspapers. “OK” stood for “oll korrect,” a playful version of “all correct.” The phrase might have faded, but a major boost during the 1840 presidential campaign, when supporters of Martin Van Buren, nicknamed “Old Kinderhook,” used “OK” as a slogan.

Today, “OK” is understood in hundreds of languages and remains one of the world’s most universal words.

Yvette Marie Stevens, known professionally as Chaka Khan, born March 23, 1953, in Chicago, Illinois, is a singer whose powerhouse voice has helped define funk, R&B and pop across decades.

She rose to fame as the lead singer of Rufus, with hits like “Tell Me Something Good” and “Ain’t Nobody,” before launching a successful solo career with songs including “I’m Every Woman” and “Through the Fire.” A 10-time Grammy winner, Khan remains one of the most celebrated and influential vocalists of her generation.

Her voice is instantly recognizable, and her influence stretches across R&B, pop, dance and generations of artists.

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Today is National Chia Day, celebrating the tiny seed with ancient roots, modern superfood status and plenty of surprising trivia packed inside.

• Chia seeds grow on Salvia hispanica, a flowering plant in the mint family.

• They are packed with omega-3s and are one of few plant foods considered a complete protein.

• Chia seeds can absorb 10 to 12 times their weight in liquid, creating their signature gel texture.

• Chia can be used as an egg substitute in baking when mixed with water.

• It was once used as currency and tribute by the Aztecs and was banned after the Spanish conquest.

To celebrate with some overnight chia pudding, whisk together 1 cup milk, ¼ cup chia seeds, 1 tablespoon maple syrup, a little vanilla and a pinch of salt, let sit 10 minutes and re-stir, then refrigerate overnight and top with fruit, granola, jam or nuts.