How a disappearing ear bone turned bats into masters of echolocation | Science

Bats use sound to hunt a dizzying array of prey. Some zero in on flowers to sip nectar, whereas others find cattle and suck their blood. Many nab insects midflight. One species of bat senses small fish beneath the water and snatches them as osprey do. Now, scientists have discovered an anatomical quirk in the … Read more

Bitcoin: Hundreds of Salvadorans claim money is disappearing from their government-backed digital wallets

El Salvador’s attempt to become the world’s first state to adopt bitcoin as legal tender hits another stumbling block as hundreds of citizens claim that funds are disappearing from their accounts Technology 23 December 2021 By Matthew Sparkes El Salvador adopted bitcoin as legal tender on 7 September Rodrigo Sura/EFE/Alamy Live Hundreds of Salvadorans claim … Read more