CANBERRA, AUSTRALIA—A piece of red, glossy pottery found in the rugged highlands of Papua New Guinea has been shown to be the oldest-known pottery in New Guinea. Tim Denham of Australian National University, working with researchers from Otago University, obtained precise dates for the pottery as part of a study to learn more about how the technology spread throughout the Pacific. People who lived on the coast of Papua New Guinea would have had contact with seafaring, pottery-making cultures such as the Lapita people. “It’s an example of how technology spread among cultures. Some pottery must have soon found its way into the highlands, which inspired the highlanders to try making it themselves,” Denham said in a press release. “And it shows human history is not always a smooth progression—later on pottery making was abandoned across most of the highlands of New Guinea. No one knows when or why,” he said. To read about smoked mummies in Papua New Guinea, go to the current issue's "World Roundup."