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A tiny, 120 million-year-old fossil, discovered in northeast China, is neither bird nor dinosaur but is perched on its own evolutionary branch, somewhere in between.
E-Mail Boulder, Colo., USA: The Geological Society of America regularly publishes articles online ahead of print. For April, GSA Bulletin topics include multiple articles about the dynamics of China and Tibet; the Bell River hypothesis that proposes that an ancestral, transcontinental river occupied much of northern North America during the Cenozoic Era; new findings in the climatic history during one of the Earth's coldest periods: The Late Paleozoic Ice Age; and the age an nature of the Chicxulub impact crater. You can find these articles at https://bulletin.geoscienceworld.org/content/e...
No battery? No problem. At Penn, a mini electric car draws energy from its surroundings. Tom Avril, The Philadelphia Inquirer © ALEJANDRO A. ALVAREZ/The Philadelphia Inquirer/TNS The car can steer itself to draw energy from metal surfaces, avoiding nonmetal surfaces such as this yellow tape. The technology also could run generators during power outages. Min Wang placed the miniature electric car on a sheet of aluminum, and immediately — despite having no battery — the vehicle began to move. Its power supply was the metal beneath it, with an assist from oxygen in the sur...