Before wastewater reaches recipient waters, nutrients must be removed in order to avoid eutrophication and large algal blooms, which may result in serious damage to animal and plant life. Robert Almstrand at the University of Gothenburg, Sweden, has shown in his thesis that better removal of nitrogen from wastewater can be achieved by providing the bacteria that purify the water with alternating high and low levels of nutrients.
If we would pump aerosols in the stratosphere to artificially cool the Earth and thereby compensate (part of) the current climate warming, we would be permanently living under a slight sunshade. That would mean in a futuristic world it may … Continue reading
And that’s not quite the same as having things the other way around. If you see Criegee biradicals as silver bullet, remember they are already constantly being fired up…
Says an international research group led by Gothenburg University. It serves to show individual climate sensitivity studies are never conclusive but add up bits of fresh understanding to an already enormous pile of data and knowledge.
White sulfur aerosols cool the climate; black carbon soot warms the climate. So when you mix the two kinds of aerosol pollution up in the Asian brown cloud, one would expect climate effects to even out. Unfortunately in our physical … Continue reading
Air pollution from diesel engine fumes may end up in a honeybee’s brain. And for our flower-powered little friends that could be about as bad as it sounds, say a group of researchers from the University of Southampton – led … Continue reading
Over the second half of the 20th century the monsoon rains in the Ganges Valley in north and northeast India decreased by 10 percent. Meanwhile monsoon rains in the south and the Indus Valley [remember 2010 Pakistan floods] increased. Burning … Continue reading
It´s basic chemistry: coal is mainly carbon, if you burn it you get lots of CO2. Natural gas is mostly methane, and that’s a different story. With methane just ’20 percent of the burned atoms’ are carbon, the rest is … Continue reading