Submarines are meant to be stealthy, silent weapons of destruction, but how do they navigate and engage targets? In more ways ...

For a Seawolf-class submarine travelling at 24 knots (12.5 metres per second) and 30 metres (98 feet) depth, the wake's magnetic field reaches 10⁻¹² tesla - "well within the sensitivity range ...

Higher carbon-dioxide levels in the atmosphere change all these things. The gas’s mere presence acidifies seawater. Its ...