ReHacked #147: Balloon detects first signs of a ‘sound tunnel’ in the sky, Balloon detects first signs of a ‘sound tunnel’ in the sky

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Balloon detects first signs of a ‘sound tunnel’ in the sky | Science | AAAS #nature #science #engineering

About 1 kilometer under the sea lies a sound tunnel that carries the cries of whales and the clamor of submarines across great distances. Ever since scientists discovered this Sound Fixing and Ranging (SOFAR) channel in the 1940s, they’ve suspected a similar conduit exists in the atmosphere. But few have bothered to look for it, aside from one top-secret Cold War operation.

Now, by listening to distant rocket launches with solar-powered balloons, researchers say they have finally detected hints of an aerial sound channel, although it does not seem to function as simply or reliably as the ocean SOFAR. If confirmed, the atmospheric SOFAR may pave the way for a network of aerial receivers that could help researchers detect remote explosions from volcanoes, bombs, and other sources that emit infrasound—acoustic waves below the frequency of human hearing.

Increased emergency cardiovascular events among under-40 population in Israel during vaccine rollout and third COVID-19 wave | Scientific Reports #health

Cardiovascular adverse conditions are caused by coronavirus disease 2019 (COVID-19) infections and reported as side-effects of the COVID-19 vaccines. Enriching current vaccine safety surveillance systems with additional data sources may improve the understanding of COVID-19 vaccine safety. Using a unique dataset from Israel National Emergency Medical Services (EMS) from 2019 to 2021, the study aims to evaluate the association between the volume of cardiac arrest and acute coronary syndrome EMS calls in the 16–39-year-old population with potential factors including COVID-19 infection and vaccination rates. An increase of over 25% was detected in both call types during January–May 2021, compared with the years 2019–2020. Using Negative Binomial regression models, the weekly emergency call counts were significantly associated with the rates of 1st and 2nd vaccine doses administered to this age group but were not with COVID-19 infection rates. While not establishing causal relationships, the findings raise concerns regarding vaccine-induced undetected severe cardiovascular side-effects and underscore the already established causal relationship between vaccines and myocarditis, a frequent cause of unexpected cardiac arrest in young individuals. Surveillance of potential vaccine side-effects and COVID-19 outcomes should incorporate EMS and other health data to identify public health trends (e.g., increased in EMS calls), and promptly investigate potential underlying causes.

Workers discover ‘unprecedented’ Phoenician necropolis in southern Spain | Spain | The Guardian #history

Workers upgrading water supplies in southern Spain have come across an “unprecedented” and well-preserved necropolis of subterranean limestone vaults where the Phoenicians who lived on the Iberian peninsula 2,500 years ago laid their dead.

Archaeologists exploring the site – which was discovered amid the Roman ruins in the town of Osuna, 55 miles (90km) east of Seville – say the Phoenician-Carthaginian cemetery dates back to the fourth or fifth century BC and is highly unusual as such sites are normally found in coastal areas rather than so far inland.

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