Bats use high frequency sounds waves to echolocate their food. While most bats move their heads, nose, ears or mouth to change the direction of the sound waves they produce, Egyptian fruit bats do so without any visible movements in their head or body. Scientists from IISER Pune and University of Washington, USA, Johns Hopkins University, USA explore how they pull off this feat.
Two new studies from the Indian Institute of Bombay (IIT Bombay), Mumbai, show the importance of defects in the arrangement of atoms in a crystal, called dislocations, in shaping the physical properties of metallic alloys.