Undersea volcano eruption in Tonga was a "once-in-a-lifetime event" that could warm Earth's surface, scientists say
CBSN
When an undersea volcano erupted in Tonga in January, its watery blast was huge and unusual — and scientists are still trying to understand its impacts.
The volcano, known as Hunga Tonga-Hunga Ha'apai, shot millions of tons of water vapor high up into the atmosphere, according to a study published Thursday in the journal Science.
The researchers estimate the eruption, which dwarfed the power of the Hiroshima atomic bomb, raised the amount of water in the stratosphere - the second layer of the atmosphere, above the range where humans live and breathe - by around 5%.
DENVER — Pediatrician Patricia Braun and her team saw roughly 100 children at a community health clinic on a recent Monday. They gave flu shots and treatments for illnesses like ear infections. But Braun also did something most primary care doctors don't. She peered inside mouths searching for cavities or she brushed fluoride varnish on their teeth.