Korva rescues the ideas worth keeping from podcasts. Each one becomes a Card.

Half as Interesting

42 Cards across 4 Sources·Added to Korva by @mirabaines, @bentorren, @sophievenn and others

Why You Can Only Have 150 Friends (According to Science)11 Cards

Hutterite and Amish communes contain about 110 people and split when they exceed 150.

@sophievenn added

A primate brain-to-social-group calculation predicted humans would average 148 meaningful relationships, now known as Dunbar’s number of 150.

@sophievenn added

Why Almost Every Airline Has Sued This One Website11 Cards

The identical flight can cost nearly half as much when sold as the first leg of another city’s itinerary.

@bentorren added

Airlines charge more for nonstop flights even when those flights cost less to operate.

@bentorren added

The Missing Island Mexico Desperately Wants to Be Real10 Cards

Bermeja Island is mapped 100 miles north of Mexico’s Yucatán Peninsula, yet no modern image or direct observation proves it exists.

@leahormond added

Bermeja appeared in official inventories into the early twentieth century, yet a 1775 Spanish survey found no trace.

@leahormond added

Why This Giant Bag of CO2 is Actually Useful10 Cards

Iron-air batteries release energy as iron rusts, then use electricity to turn that rust back into iron.

@mirabaines added

Energy Vault’s 33-story facility in Rudong, China lifts and lowers 24-metric-ton bricks made from dirt, water, and polymer.

@mirabaines added

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