lukewarm water hand hot cold sensation

The same glass of water can feel hot and cold at once

Place one hand in cold water and the other in warm water, then move both into the same lukewarm water. The first hand may feel warmth while the second feels coolness. Temperature receptors respond partly to recent changes, not just absolute temperature. Your brain's experience of heat depends on what happened moments earlier.

The Spanish invaded an Inca Empire already weakened from within

Before the main Spanish attack, the Inca Empire had already suffered a war over who would rule, unrest among recently conquered peoples, and deadly disease outbreaks. Emperor Huayna Capac may have died in one of them. The Spanish therefore attacked an empire that was still powerful but already badly weakened.

Slave-trade profits helped fund Copenhagen buildings

Between 1660 and 1806, Danish merchants—many based in Copenhagen—transported about 120,000 enslaved Africans to the Danish West Indies. Profits from the slave trade helped fund prominent Copenhagen buildings, including Moltke Mansion and the Yellow Palace.

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lukewarm water hand hot cold sensation

The same glass of water can feel hot and cold at once

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