NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between ...

Haiti's gangs have 'near-total control' of the capital as violence escalates, UN says Guardians pitcher Luis Ortiz placed on ...

Due to the nature of water, sound wave is used for underwater transmission instead of radio wave. Long propagation time and a variant attenuation model are two major concerns in MAC protocol design ...