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In the depths of winter, sunscreen might not be top of many people’s shopping lists. Yet it remains a staple in most households, and many of us are encouraged to use it year-round. But sunscreen’s history reveals more than just protection from the sun.

“Quitters day” falls on January 9 this year and marks the point at which people are most likely to give up their New Year’s resolutions. As usual, weight loss is one of the most common goals. But there are compelling reasons to suggest that ditching the diet is not a…

In 2025, youth-led protests erupted everywhere from Morocco to Nepal, Madagascar and Europe. A generation refused to remain silent in the face of economic precariousness, corruption and eroding democratic norms and institutions.

Getting out of a chair shouldn’t be a struggle. Yet for many older adults, simple everyday movements like this become increasingly difficult as our muscles break down and weaken with age, a process called sarcopenia. The consequences build quietly: trouble climbing stairs, more hospital visits and, eventually, losing the ability…

Donald Trump joked in 2016 that he could “stand in the middle of Fifth Avenue and shoot somebody” and not lose support. In 2024, after two impeachments and 34 felony convictions, he has more or less proved the point. He not only returned to the White House, he turned his…

When wildfires began racing through the Los Angeles area on Jan. 7, 2025, the scope of the disaster caught residents by surprise. Forecasters had warned about high winds and exceptionally dry conditions, but few people expected to see smoke and fires for weeks in one of America’s largest metro areas.

Growing up in the 1970s, I took for granted the trash piles along the highway, tires washed up on beaches, and smog fouling city air. The famed “Crying Indian” commercial of 1971 became a symbol of widespread environmental damage across the United States.

Across the United States, political polarization has deepened to historic levels. In a report published in May 2025, the Pew Research Center found that Americans are more divided and less trusting of one another than at any point in recent decades. Yet museums remain among the few places where curiosity…

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com.