In 2020, an international team reported in Nature on sediments drilled off West Antarctica. They held roots, pollen and spores from a temperate rainforest about 90 million years old that grew less than 1,000 km from the South Pole. In the age of the dinosaurs, despite months of polar night, the climate there was mild enough to sustain it.
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.