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Astronomers have finally found something they have spent decades searching for: a teardrop-shaped star that pulsates on only one side. Citizen scientists helped the discovery team find the strangely lopsided star, which is known as HD74423, in data gathered by NASA's Transiting Exoplanet Survey Satellite (TESS). The star is about 1.7 times the mass of Earth's sun, and scientists determined that HD74423's weird pulsing is caused by a second, smaller star. "I've been looking for a star like this for nearly 40 years, and now we have finally found one," study co-author Don Kurtz, an astronomer at the University of...

In a land flowing with milk and honey, what kinds of food made up the ancient Jewish diet? What did people eat and drink in Roman Palestine? Susan Weingarten guides readers through a menu of the first millennium C.E. in her article "Biblical Archaeology 101: The Ancient Diet of Roman Palestine," published in the March/April 2019 issue of Biblical Archaeology Review. Although it is difficult to reconstruct the diet of the average person in Palestine during the Roman and Late Antique periods, Weingarten, as both a food historian and an archaeologist, is well equipped for the task. Using archaeological remains...

More than 4,000 years ago builders carved out the entire surface of a naturally pyramid-shaped promontory on the Greek island of Keros. They shaped it into terraces covered with 1,000 tonnes of specially imported gleaming white stone to give it the appearance of a giant stepped pyramid rising from the Aegean: the most imposing manmade structure in all the Cyclades archipelago... Archaeologists from three different countries involved in an ongoing excavation have found evidence of a complex of drainage tunnels -- constructed 1,000 years before the famous indoor plumbing of the Minoan palace of Knossos on Crete -- and traces...

Danish scientists challenge the accepted scientific views of how nerves function and of how anesthetics work. Their research suggests that action of nerves is based on sound pulses and that anesthetics inhibit their transmission. Every medical and biological textbook says that nerves function by sending electrical impulses along their length. "But for us as physicists, this cannot be the explanation. The physical laws of thermodynamics tell us that electrical impulses must produce heat as they travel along the nerve, but experiments find that no such heat is produced," says associate professor Thomas Heimburg from the Niels Bohr Institute at Copenhagen...