Science Daily

1. Massive asteroid impact 6.3 million years ago left giant glass field in Brazil

   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, where they were first found, these dark, aerodynamic droplets of natural glass stretch across more than 900 kilometers and may mark one of South America’s most significant ancient impact events.

2. Scientists just created chocolate honey packed with surprising health perks

   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 synthetic solvents required. The process is considered green and sustainable, and the product could find its way into gourmet foods and cosmetics.

3. Beyond amyloid plaques: AI reveals hidden chemical changes across the Alzheimer’s brain

   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 beyond amyloid plaques. Key memory regions showed major shifts in cholesterol and energy-related molecules. The findings hint that Alzheimer’s is a whole-brain metabolic disruption—not just a protein problem.

4. Is bubble tea bad for you? New research raises red flags

   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—sometimes more than soda—raising risks for cavities, obesity, diabetes, and fatty liver disease. There are even reports linking frequent consumption to kidney stones and poorer mental health.

5. New iron nanomaterial wipes out cancer cells without harming healthy tissue

   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 tiny iron-based structure sparks not one but two intense chemical reactions, flooding tumors with cell-damaging oxygen molecules. This dual attack overwhelms cancer cells with oxidative stress while sparing healthy tissue.