The aye-aye is considered an omen of death in Madagascar — making it both feared and threatened.

Sumo wrestlers follow a strict lifestyle governed by the Sumo Association, including how they eat, dress, and live.

Cashews always come roasted because raw cashews contain urushiol, the same toxin as poison ivy.

The tomato was long believed to be poisonous in Europe because wealthy people died after eating it — they were actually poisoned by lead from pewter plates.

Repeated exposure increases perceived significance.

Great Zimbabwe was a powerful African city-state.

People are more creative in a blue room than a red room — red increases alertness, blue encourages open thinking.

Cashew nuts grow on the outside of the cashew apple, a fruit that is itself edible but highly perishable.

Pistachios are technically drupes — the same fruit category as peaches, plums, and cherries.