A new genetic map paints a comprehensive picture of the 2,000 or so years in which different Jewish groups migrated across the globe, with some becoming genetically isolated units while others seemed to mix and mingle more. The findings allow researchers to trace the diaspora, or the historical migration, of the Jews, which began in…
In the 1600s, Europeans exploring the American southeast wrote of a purification ritual practiced by the native people, involving dancing, vomiting, and large amounts of what the travelers called black drink. Served from shell cups, the highly caffeinated tea was brewed from the shrub Ilex vomitoria, a species of holly. In a new study, researchers…
By some estimates, a third of Earth’s organisms live in our planet’s rocks and sediments, yet their lives are almost a complete mystery. The recent work of microbiologist James Holden of the University of Massachusetts-Amherst and colleagues shines a light into this dark world. In the journal Proceedings of the National Academy of Sciences, they…
Curiosity, the largest and most advanced spacecraft ever sent to another planet, stuck its extraordinary landing in triumphant and flawless fashion, and is poised to begin its pioneering, two-year hunt for the building blocks of life — signs that Earth’s creatures may not be not alone in the universe. NASA’s $2.5-billion mission involved the work…
Billions of times the mass of our own sun, so-called massive black holes present a baffling mystery with clues hidden at the very dawn of existence.
Last year, astronomers discovered a quiescent black hole in a distant galaxy that erupted after shredding and consuming a passing star. Now researchers have identified a distinctive X-ray signal observed in the days following the outburst that comes from matter on the verge of falling into the black hole. This tell-tale signal, called a quasi-periodic…
Drilling of the seabed off Antarctica has revealed that rainforest grew on the frozen continent 52 million years ago, scientists said, warning it could be ice-free again within decades. The study of sediment cores drilled from the ocean floor off Antarctica’s east coast revealed fossil pollens that had come from a “near-tropical” forest covering the…
Archaeologists say they have found traces of 2,500-year-old chocolate on a plate in the Yucatan peninsula, the first time they have found ancient chocolate residue on a plate rather than a cup, suggesting it may have been used as a condiment or sauce with solid food. Experts have long thought cacao beans and pods were…
The Higgs boson-like particle whose discovery was announced on 4 July looks significantly more certain to exist. The particle has been the subject of a decades-long hunt as the last missing piece of physics’ Standard Model, explaining why matter has mass. Now one Higgs-hunting team at the Large Hadron Collider report a “5.9 sigma” levels…
Archaeologists in southeastern Turkey have discovered an enormous stone sculpture of a Neo-Hittite warrior-king daring from the first millennium B.C.