It is a physical law known since the 19th century, the Clausius-Clapeyron relation: for every degree Celsius of warming, air can hold about 7% more water vapour. According to the IPCC, this is one reason extreme downpours are becoming more frequent and intense in many regions. Warmer air is a bigger sponge, and eventually it gets wrung out.
On 27 August 1883, the eruption of the Indonesian volcano Krakatoa was heard as far away as Rodrigues Island, nearly 4,800 km away. Its pressure wave was picked up by barometers worldwide and circled the globe several times. The tsunamis that followed killed more than 36,000 people.
The deepest known point in the ocean, Challenger Deep, lies roughly 10,900 m below the Pacific surface. Drop Everest in and its summit would still sit about 2 km underwater. Down there, the pressure is more than 1,000 times what you feel at sea level, roughly a tonne pressing on every square centimetre.