Going viral: how ideas, beliefs, and innovations spread in the digital age
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Updates every hour. Last Updated: 28-Dec-2025 15:11 ET (28-Dec-2025 20:11 GMT/UTC)
A new study by USC Leonard Davis School of Gerontology researchers shows that Americans with less education are aging faster than their peers with more schooling, and the gap has grown over the last 30 years.
The study examined “biological aging,” which goes deeper than simply counting birthdays. Biological aging measures how the body is changing over time, including how well organs and systems are working.
A study of social media posts in 157 countries finds extreme temperatures of 95 degrees Fahrenheit or more lowers daily sentiment by around 25 percent in lower-income countries and about 8 percent in higher-income countries.
LGBTQIA+ college students living in conservative US states have reported far worse mental health than their counterparts in more liberal areas in a national study.