Researchers found glass spherules in sediment from Yvonne Malinowski's backyard in Melrose, Pennsylvania, containing flecks of pure iron indicating formation at temperatures above 2,000°C (about 3,600°F).
Sources
- Did a Comet Really Kill the Mammoths 12,900 Years Ago? (nationalgeographic.com)
- https://www.pnas.org/doi/10.1073/pnas.1304059110 (pnas.org)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC3780899/ (pmc.ncbi.nlm.nih.gov)
More in Science
- The Cahuilla earthquake swarm's earthquakes initially began about five miles underground after fluid entered a fault system and altered pressure within the rocks.
- Both bevacizumab and ranibizumab were originally developed by the same company, Genentech.
- Pig remains from Durrington Walls showed widely varying strontium, oxygen, and sulfur isotope signatures, indicating different environments of origin, but similar carbon isotope signatures, indicating the pigs had eaten similar diets.
- Greene and Paxton's study on the neuroscience of honesty was published in PNAS with the DOI 10.1073/pnas.0900152106.
- In a food-sharing experiment, chimpanzee sharing behavior declined from an average of 7.12 out of 9 trials among juveniles to 4.43 among adults.
- The new Pacific warm-water patch has water up to 3°C above normal but extends only about 30 meters deep, unlike the original Blob, whose warmth penetrated hundreds of meters below the surface.