Most library-goers don’t get to enjoy a bit of nature while pursuing books; not so for Portugal’s Joanine Library. A colony of bats has called the library home since the 18th century. The fascinating ...

For the past 25 years, Professor of Engineering and Biology Sharon Swartz and Professor of Engineering Kenneth Breuer ’82 P’14 P’16 have been fascinated by animal flight. The two professors have ...

P. kuhlii above a spectrogram of its echolocation sequence. Source: Eran Amichai, used with permission. Many bats navigate using echolocation—emitting high-frequency sound pulses and analyzing the ...