When viruses jump the species barrier it often sparks concern that they could mutate dangerously.
The cause of death is uncertain, though officials believe the fish are likely to have been poisoned.
NASA's gigantic Space Launch System moon rocket, topped with an uncrewed astronaut capsule, is set to begin an hours-long crawl to its launchpad Tuesday night ahead of the behemoth's debut test flight later this month.
Water may have been brought to Earth by asteroids from the outer edges of the solar system, scientists said.
Polio, a deadly disease that used to paralyze tens of thousands of children every year, is spreading in London, New York and Jerusalem for the first time in decades, spurring catch-up vaccination campaigns.
The UK Health Security Agency reported in June that poliovirus had been detected in sewage in north and east London between February and May 2022.
Britain is suffering its worst drought since the 1970s, with dry weather expected until October.
Coupled with dry, baked soils which are particularly vulnerable to creating fast runoff, the heavy, localised downpours that accompany thunderstorms can cause flash flooding.
French maize crop conditions declined steeply last week to their lowest level in at least a decade, data from farm office FranceAgriMer showed.
The world was still learning to live with the highly contagious coronavirus when another potentially fatal virus, Langya, started rearing its head.
The following is a summary of some recent studies on COVID-19.
The source of the River Thames has dried up further downstream than ever before, as England looks set to enter a drought that some experts say the country is unprepared for.
More than 1,000 firefighters backed by water-bombing aircraft battled a "monster" wildfire near France's wine-growing heartland of Bordeaux for a third day on Thursday.
Over 30,000 cases of monkeypox have been reported in more than 80 countries worldwide in 2022.
Following a heatwave alert, the UK Met Office has now said that parts of England and Wales face an "exceptional" risk of wildfires in the coming days.