Nomads were setting food trends along the Silk Roads

The Silk Roads stretched from Asia to Europe. From the 2nd century BC until the 16th century AD, people along this trade route exchanged goods like wool, gold, silver, and silk of course — but food has often been missing from understandings of the exchange system. New research is revealing that the food trendsetters along the Silk Road may have been mobile pastoralists, often called “nomads.” Read more.

Solar system born amid flood of ultraviolet light, say ASU astrophysicists

The sun is made almost entirely of hydrogen and helium. Earth, on the other hand, is made mostly of oxygen packed into various compounds. So are its rocky planet neighbors. The giant planets, such as Jupiter and Saturn, have compositions more like the sun’s, but still are notably different from it.

Here’s the puzzle. The sun and planets formed at the same time from the same cloud of gas and dust. But the material that made the planets had a composition different from the sun’s. How did that happen? Read more.

Future Quantum Processors Eye 28Si Isotope

CEA-Leti is claiming a breakthrough towards large-scale fabrication of quantum bits, or qubits, the elementary bricks of future quantum processors. They demonstrated on a 300 mm pre-industrial platform a new level of isotopic purification in a film deposited by chemical vapor deposition (CVD). This enables creating qubits in thin layers of silicon using a very high purity silicon isotope, 28Si, which produces a crystalline quality comparable to thin films usually made of natural silicon. Read more.

Fish accounted for surprisingly large part of the Stone Age diet

New research at Lund University in Sweden can now show what Stone Age people actually ate in southern Scandinavia 10,000 years ago. The importance of fish in the diet has proven to be greater than expected. So, if you want to follow a Paleo diet, you could quite simply eat a lot of fish. Read more.

Maya Dogs Were Traded Across Far-flung Territory, Study Shows

Dogs were traded across the Maya territory centuries earlier than had previously been believed, according to a new archaeological analysis of isotopes from ancient bones in Guatemala. The minute neutron differences in atoms of strontium, carbon, nitrogen and oxygen show how certain animals were domesticated as pets – or potentially for sacrifice or food purposes. Read more.