Russia declared a state of emergency after 20,000 tonnes of diesel leaked into the river.
The eruption was so big it covered an area the size of New Jersey in volcanic glass.
Andrei Goverdovsky, from the state nuclear agency Rosatom, said components can be inhaled to emit UV light directly onto the lungs.
Alberto Zangrillo said viral loads from tests carried out in the last 10 days were "infinitesimal" compared with samples from a month ago.
NASA said the flares may suggest the sun is emerging from the solar minimum and entering its next cycle.
The site was discovered by chance by scientists studying fossilized shark and ray teeth at three locations in South America.
Fast radio bursts were used as "cosmic weigh stations" to find the sparsely distributed matter.
R5519 is thought to have formed through a collision with a "victim" galaxy about three billion years after the Big Bang.
Survey also found most people think vaccines and treatments should not be provided to people who can afford them first.
The weakening of the magnetic field is being observed by the European Space Agency's Swarm satellite constellation.
Scientists have mapped changes to the algae that forms on the surface of snow during the frozen continent's summer months.
Scientists from Denmark were studying a king penguin colony to assess its impact on greenhouse gas emissions.
The Energy Information Administration says coal generation is expected to fall by 25 percent this year, with an 11 percent cut in emissions.
The sun has been "blank" for over three quarters of the year, putting it in the running for one of the quietest periods since the start of the Space Age.
Pūhāhonu appears to have formed from a "solitary wave in the Hawaiian plume," scientists say.
The largest of these prehistoric species was 10 times the length of anchovies living today.
Discovery could have implications for future geoengineering research into influencing rain.
The increase in estimated cases and deaths is believed to be down to states starting to reopen.
A magnetic patch under Canada has become weaker, allowing a competing "lobe" to take control.
Scientists created a brain-computer interface to observe the "offline" brain replaying neural firing patterns.
The fast radio burst appears to have come from a galactic magnetar and has been described as a "breakthrough" for the research field.
The virus reemerged in France in 2015, five years after the original outbreak was brought under control.
Until recently Caye Caulker largely relied on bottled water being shipped in—a service that has been disrupted by the coronavirus pandemic.
Research from China identified 33 mutations of the SARS-CoV-2 virus, 19 of which were new.
Scientists were examining what impact marine megafauna extinctions will have on oceans.
The outbreak also may not have started in Wuhan, geneticist Peter Forster said.
Used together, the HIV drug and anti-inflammatory may help stop disease progression and reduce transmission.
Some samples of SARS-CoV-2 were able to reproduce after being exposed to 140 degrees Fahrenheit for an hour.