You might expect the earliest sunset on the shortest day of the year. Yet at mid-northern latitudes, the earliest sunset comes in early December and the latest sunrise in early January. The cause: Earth's elliptical orbit and axial tilt shift the time of solar noon slightly through the year. The same thing happens, in reverse, in the Southern Hemisphere.
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.