It’s time to welcome a new type of cell to the club of living things that can harvest nitrogen from the atmosphere.
Until now, the only lifeforms thought to pull nitrogen from the air and turn it into a biologically useful form were bacteria and archaea. But the discovery of a special ammonia factory inside a single-celled ocean alga adds eukaryotes — organisms with membrane-bound structures called organelles — to the list, researchers report in the April 12 Science.
A witness to the first ever nitrogen hypoxia execution described the ‘horrific’ moment Kenneth Eugene Smith writhed in agony as he suffocated to death.
Smith, 58, had a tight gas mask placed over his face before a stream of 100 percent nitrogen gas suffocated him inside the execution chamber at the William C. Holman prison in Atmore, Alabama.
The moment was the ‘worst thing’ spiritual guider Jeff Hood said he had ever seen, claiming prison officials gasped in shock
Millions of years ago, giant volcanic eruptions in what’s now Turkey and Peru each deposited millions of metric tons of nitrate on the surrounding land. That nutrient may have come from volcanic lightning, researchers reported April 24 at a meeting of the European Geosciences Union in Vienna.
The discovery adds evidence to the idea that, early in Earth’s history, volcanoes could have provided some of the materials that made it possible for life to emerge, says volcanologist Erwan Martin of
London’s controversial Ultra Low Emissions Zone has barely had any impact on improving the capital’s dirty air, scientists have warned today.
Researchers from Imperial College London say the controversial scheme – which was last month expanded and made 18 times bigger – is not effective on its own.
The team looked at the level of pollutants over a 12-week period, starting before and ending after the ULEZ was launched by Mayor of London Sadiq Khan in April 2019.
They found
