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Why do we tip--even when we know we'll never see the server again? New research suggests it's not just about rewarding good service, but about social pressure. Some people tip out of genuine appreciation, while others simply follow the norm. But here ...

NYU researchers have found a way to use light to control how microscopic particles assemble into crystals, effectively turning illumination into a tool for shaping matter. By adding light-sensitive molecules to a liquid filled with tiny particles, .. ...

Scientists have uncovered a powerful genetic switch that helps some of the body's most important immune cells grow up properly and keep our organs healthy. The switch, called MafB, guides immature precursor cells as they develop into macrophages, the ...

Inverted perovskite solar cells offer strong potential for scalable, low-cost solar power, but a hidden interface inside the device has limited their performance and durability. Researchers have now introduced crystal-solvate nanoseeds that guide ...

For the first time ever, scientists have uncovered a vast field of tektites in Brazil -- mysterious glassy fragments forged when a powerful extraterrestrial object slammed into Earth about 6.3 million years ago. Named "geraisites" after Minas Gerais, ...

Scientists in Brazil have transformed cocoa waste into a functional chocolate-infused honey packed with antioxidants and natural stimulants. Using ultrasound waves, they enhanced honey's ability to pull beneficial compounds from cocoa shells--no ...

Scientists at Rice University have produced the first full, dye-free molecular atlas of an Alzheimer's brain. By combining laser-based imaging with machine learning, they uncovered chemical changes that spread unevenly across the brain and extend ...

That photogenic cup of bubble tea may come with hidden downsides. Tapioca pearls made from cassava can absorb heavy metals like lead, and in large amounts they may slow digestion or even cause blockages. The drink is often loaded with sugar- ...

Scientists at Oregon State University have engineered a powerful new nanomaterial that zeroes in on cancer cells and destroys them from the inside out. Designed to exploit cancer's unique chemistry--its acidity and high hydrogen peroxide levels--the ...

Scientists have pulled off a feat long considered out of reach: getting light to mimic the famous quantum Hall effect. In their experiment, photons drift sideways in perfectly defined, quantized steps--just like electrons do in powerful magnetic ...