Curiosity Weekly
Bigger Brains, Reef Songs, AI Speech
May 1, 2024
Discover why human brains are getting bigger and how it can benefit us, the fascinating link between reef songs and coral restoration, and the innovative AI device giving a voice to those who are unable to speak. Dive into brain expansion research, reef soundscapes attracting coral larvae, and the cutting-edge technology for speech assistance.
11:09
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Quick takeaways
- Increasing brain size may reduce dementia risk, innovative sound strategy boosts coral reef restoration.
Deep dives
Growing Brains and Dementia Risk
A study from the University of California Davis revealed that human brains have been increasing in size across generations since the 1930s. Patients born in the 1970s displayed a 6.6% increase in brain volume compared to those born in the 1930s, with a 15% larger brain surface area. Despite the misconception that a larger brain might indicate a higher risk of Alzheimer's disease, recent data shows a decreased incidence of dementia and diseases like Alzheimer's by about 20% per decade since the 1970s, hinting at a potential brain reserve against cognitive diseases.
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