During the latter stages of the American Civil War, the H.L. Hunley made history by becoming the first combat submarine to sink an enemy ship. The Confederate crew never returned from its mission, sparking a mystery that’s lasted for over 130 years. An exhaustive new analysis suggests these pioneering submariners…
Deep rumbles, unearthly moans, high pitched screeching: these are but a few elements of the alien soundscape researchers have now recorded for the first time at Challenger Deep, the deepest known valley on the seafloor.
Jet engines are extraordinarily loud at roughly 140 decibels–and airports have struggled with mitigating their roar since the early days of commercial flight. An engineer at Boeing wants to make the cacophony more useful, if not silence it for good.