Science Snapshots: August 23, 2026
This science roundup covers the structural mechanics of narwhal tusks, the neurological effects of psychedelics on brain 'embeddedness,' and the resilience of diamonds under extreme pressure. These findings offer new insights into biological evolution, mental health therapy, and planetary science.
Why it matters
These discoveries contribute to fundamental scientific understanding in fields ranging from material science to neuroscience.
Narwhal tusk is unique thanks to its double twist
The narwhal tusk is nature’s sole straight tusk, and scientists know how it gets its left-handed twist. X-ray images of the tusk’s building blocks, the microscopic collagen fibrils, revealed two layers: the outer layer twists to the left and the inner layer, to the right. The opposing twists create an internal tension, allowing the tusk to grow straight and strong. The detail could help scientists learn how tissues integrate such patterns to acquire certain mechanical properties.
Psychedelics ‘embed’ people more in their environs
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