News That Matters

Tag: navigate

New foldable drone can navigate narrow holes

New foldable drone can navigate narrow holes

Science
Dec. 12 (UPI) -- Drones can be used to explore environs too difficult and dangerous for humans to navigate, like a burned out building or the rubble of a collapsed bridge. But often, entrances to and passageways through these environments are quite small -- holes and cracks measuring just a few inches wide. Engineers at the University of Zurich have developed a foldable drone that can shrink itself to fit through small holes. The technology could help drones navigate tight confines during search and rescue missions in the wake of a disaster. Inspired by birds, which can fold their wings mid-flight, Swiss engineers built a drone that can fold its arms in order to fly through small spaces without sacrificing aerial stability. Researchers described their new technology in the journal IEEE Ro...
Atlantic salmon use magnetic fields to navigate, even when landlocked

Atlantic salmon use magnetic fields to navigate, even when landlocked

Science
Oct. 8 (UPI) -- Even when landlocked for several generations, Atlantic salmon can sense magnetic fields and use them to navigate, according to new research. Previous studies have documented Pacific salmon's ability to sense magnetic fields. To test whether Atlantic salmon also use Earth's magnetic field to navigate, scientists designed a series of fish pins, each with differently oriented magnetic fields. Researchers replicated the Earth's magnetic field using copper-coated wooden coils. The experimental fish pins were installed in Oregon's Hosmer Lake, where Atlantic salmon, originally transplanted from Maine, have been living living for 60 years. Scientists observed the behavior of 1,150 juvenile Atlantic salmon inside the pins. "We wanted to see how Atlantic salmon would respond if we...