Northrop Grumman's massive Manta Ray underwater test bed completed at-sea trials this year, validating its ability to operate below the waves and with minimal human contact. In a photo first ...

Such missions don’t require human-present logistical assistance or maintenance. According to DARPA, the Manta Ray initiative aims to demonstrate key technologies for a new generation of long ...

The harmless animals of the animal kingdom, including Llamas and Manatee, are mostly herbivores and peaceful creatures.