› added 10 years ago

74

TIL that electric vehicles are so quiet that they have systems to generate artificial engine sounds for safety

Read more wikipedia.org

via reddit.com

x6vg TIL the oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
l7JZ5 TIL: "Silhouette" is derived from the French finance minister, Étienne de Silhouette. de Silhouette's strict economies made his name synonymous with anything done/made cheaply. Before photography, silhouette profiles cut from black card were the cheapest way of recording a person's appearance.
kBy7 TIL Mary Gibbs (voice of Boo in Monsters INC) was too young to sit to record her lines so they followed her around with a mic.
9Y9Nm TIL of the Yaghan, the people inhabiting the southernmost tip of the world. Despite extreme cold, they used to wear no clothing and instead lit many fires. This caused passing European ships to call their land the "land of fires".
8aYJK TIL multiple states on the East Coast of the U.S. had official programs to pressure freed African Americans to move back to Africa.