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Updated: 51 min 53 sec ago

Shechtman’s 10-Fold Symmetry Note: alloy defied crystal rules; quasicrystals reshaped materials science

18/05/2026
In 1982, materials scientist Dan Shechtman observed an unusual tenfold symmetry in an aluminum-manganese alloy, defying the established definition of crystals. Despite initial skepticism and resistance from the scientific community, his persistent research led to the discovery of quasicrystals, a new form of atomic ordering. This groundbreaking finding revolutionized crystallography and earned Shechtman the Nobel Prize in Chemistry.

Trees cut extra city heat by half, but not quite where most needed

18/05/2026
City trees serve as essential green shields, absorbing heat and providing relief from the suffocating warmth generated by urban structures. However, the impact is starkly diminished in hotter, low-income areas where their cooling shade is desperately needed. While urban forestry globally cools cities by an average of 0.

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