Russian authorities advise civilians to leave Ukraine region

KYIV, Ukraine — Russian-installed authorities in Ukraine told all residents of the city of Kherson to leave “immediately” Saturday ahead of an expected advance by Ukrainian troops waging a counteroffensive to recapture one of the first urban areas Russia took after invading the country.

Volcano Watch: A year of continuous eruption at Halemaʻumaʻu? Close, but not quite

The ongoing summit eruption at Kilauea volcano turned 1 year old on Sept. 29, 2022. The past year’s activity has commonly been described as “continuous” effusion of lava within Halema‘uma‘u crater. Although this has been mostly true — especially in recent months — there have been multiple occasions when lava was not flowing. What happened at those times, and why?