The heaviest human brain ever recorded weighed 5 lb. 1.1 oz. (2.3 kg.).
The deepest part of the ocean is 35,813 feet (10,916 meters) deep and occurs in the Mariana Trench in the Pacific Ocean. At that depth the pressure is 18,000 pounds (9172 kilograms) per square inch.
The largest cave in the world (the Sarawak Chamber in Malaysia) is 2,300 feet (701 meters) long, 980 feet (299 meters) wide, and more than 230 feet (70 meters) high.
The hottest planet in the solar system is Venus, with an estimated surface temperature of 864 F (462 C).
The first electronic digital computer (called ENIAC - the Electronic Numerical Integrator and Calculator) was developed in 1946 and contained over 18,000 vacuum tubes.
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