Expert Voices Jeffrey Johnson
Latest about Expert Voices Jeffrey Johnson
![Sakurajima Peninsula from Kagoshima City, Japan](https://cdn.mos.cms.futurecdn.net/oMn9eMsBz6mGCLKpm4dS4V-320-80.jpg)
Volatile Sakurajima Volcano Is a Lightning Laboratory
By Jeffrey Johnson published
Volcanic lightning is more than flashy — it may help predict eruption dangers at night and during storms.
![Sulfur deposits at Ijen Crater](https://cdn.mos.cms.futurecdn.net/WCb6d9NCMiR9FtKebSUhN5-320-80.jpg)
Averting an Acid Apocalypse: The Toxic Legacy of Kawah Ijen (Op-Ed)
By Jeffrey Johnson published
What's scarier than an acid lake? An acid lake sitting above a volcano.
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