Latest Propellants Stories

2012-11-06 11:14:22

Climate change and extreme weather events grab the headlines, but there is another, lesser known, global change underway on land, in the seas, and in the air: acidification. It turns out that combustion of fossil fuels, smelting of ores, mining of coal and metal ores, and application of nitrogen fertilizer to soils are all driving down the pH of the air, water, and the soil at rates far faster than Earth's natural systems can buffer, posing threats to both land and sea life. "It's a...

Salt Marshes Increase Carbon Capture In Warming Temperatures
2012-09-27 09:17:22

Alan McStravick for redOrbit.com — Your Universe Online With only 6 days separating us from the third-hottest summer on record, the warnings of climate scientists are increasingly being taken with more than just a grain of salt. Many climate scientists are of the opinion that if we haven´t passed a tipping point already, then that time is rapidly approaching. Carbon dioxide, one of the most prevalent of our greenhouse gases, acts as a sort of blanket in our atmosphere by...

2012-09-19 15:58:13

Researchers at the National Institute of Standards and Technology (NIST) have developed a new computational method for identifying candidate refrigerant fluids with low "global warming potential" (GWP) – the tendency to trap heat in the atmosphere for many decades – as well as other desirable performance and safety features. The NIST effort is the most extensive systematic search for a new class of refrigerants that meet the latest concerns about climate change. The new method...

2012-06-16 01:03:07

Tiny microbes are at the heart of a novel agricultural technique to manage harmful greenhouse gas emissions. Scientists have discovered how microbes can be used to turn carbon dioxide emissions into soil-enriching limestone, with the help of a type of tree that thrives in tropical areas, such as West Africa. Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungus and bacteria, not only does the tree flourish, it also...

Reaction Uses Carbon Dioxide To Make Carbon-Based Semiconductor
2012-05-21 09:11:32

A materials scientist at Michigan Technological University has discovered a chemical reaction that not only eats up the greenhouse gas carbon dioxide, it also creates something useful. And, by the way, it releases energy. Making carbon-based products from CO2 is nothing new, but carbon dioxide molecules are so stable that those reactions usually take up a lot of energy. If that energy were to come from fossil fuels, over time the chemical reactions would ultimately result in more carbon...

2012-01-25 12:42:36

The upsurge in droughts is one of the main consequences of climate change, and affects crops in particular. However, Anabel Robredo, a biologist at the University of the Basque Country (UPV/EHU), has confirmed that in the case of barley at least, climate change itself is providing it with self-defence mechanisms to tackle a lack of water. Climate change is in fact also responsible for a considerable increase in the concentration of CO2, a gas that, paradoxically, is providing this plant with...

Future Forests May Soak Up More Carbon Dioxide Than Previously Believed
2011-10-15 04:00:33

North American forests appear to have a greater capacity to soak up heat-trapping carbon dioxide gas than researchers had previously anticipated. As a result, they could help slow the pace of human-caused climate warming more than most scientists had thought, a U-M ecologist and his colleagues have concluded. The results of a 12-year study at an experimental forest in northeastern Wisconsin challenge several long-held assumptions about how future forests will respond to the rising...

Word of the Day
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.