Alvin will help scientists unlock ocean mysteries 4 miles deep October 16, 2022, 07:24:20 PM Alvin will help scientists unlock ocean mysteries 4 miles deep[html]Black smoke appears to rise from chimney-like formations of the hottest and deepest known hydrothermal vents on Earth.[/html]Source: Alvin will help scientists unlock ocean mysteries 4 miles deep (http://ht**://www.cnn.c**/2022/10/14/world/ocean-exploration-depth-alvin-scn/index.html) Quote Selected