Subtle facial movements indicating a number of emotions have been detected in mice by machine learning tools that may help researchers learn more about how animals convey emotions, according to findings published in Science. Researchers used high-speed cameras to capture the mice's expressions as they were given experiences meant to spark emotions such as pleasure, pain, disgust and fear.
Culinary students at a Minnesota high school learned culinary, business and other skills by planning to operate a food truck business. The project had students planning menus, creating marketing campaigns and budgeting for business costs, although the coronavirus pandemic affected plans for them to participate in a final event.
Homo erectus apparently lived alongside other nonhuman hominin species in what is today South Africa about 100,000 years earlier than once thought, a study published in Science suggests. Researchers found the skull cap of a young Homo erectus child at the Drimolen site along with remains of the hominin Paranthropus robustus that dated back to the same time period, about 1.98 million years ago.
Hubble Space Telescope observations have found an intermediate-mass black hole, which astronomers hope will help them better understand how black holes evolve. "Intermediate-mass black holes are very elusive objects, and so it is critical to carefully consider and rule out alternative explanations for each candidate," said Dacheng Lin, lead author of a study on the find published in The Astrophysical Journal Letters.
Large cave bears that lived in Europe more than 24,000 years ago had large sinuses, which may have contributed to their extinction, a study in Science Advances suggests. Researchers say the bears' large sinuses may have been a "fatal trade-off" that made it more difficult for them to put on extra fat to survive during hibernation.
High-school animal science and middle-school agriculture students at a North Carolina school were completing embryology projects to learn about the life cycle of a chicken. Prolonged school closures due to the coronavirus pandemic led a teacher to complete the project at home.
A member of the Pennsylvania Restaurant & Lodging Association suggested establishing a culinary etiquette program that could help support students who are interested in careers in the food service industry. The program also helps students gain confidence eating out at high-end restaurants.
Career and technical education teachers in an Idaho district are shifting what are traditionally hands-on lessons to a virtual format amid what are expected to be prolonged school closures. In some cases, teachers are planning to film themselves welding, and students can record projects they finish at home.
The brains of early hominid species Australopithecus afarensis were small, like those of chimps, and they grew at a slow pace, as human brains do, according to a study published in Science Advances. The slow post-birth brain growth may have helped mothers by easing some physical and nutritional aspects of caring for children, and "likely provided a foundation for the evolution of long childhoods in the human lineage," said study author Philipp Gunz.
Evidence that a rainforest once flourished near Antarctica has been found and described in Nature. Researchers found spores and roots dating back to the Cretaceous period when they drilled into the floor of the Amundsen Sea.
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