Price tag on carbon emission

The following video tells about why is it necessary to put a price tag on carbon emission.

Corn Ethanol More Harmful Than Gasoline



The pros and cons of biofuels

The pros and cons of biofuels
ONCE upon a time, biofuels were thought of as a solution to fossil-fuel dependence. Now they are widely seen as a boondoggle to agribusiness that hurts the environment and cheats taxpayers. A report commissioned by the United Nations endorses neither extreme. It gives high marks to some crop-based fuels and lambasts others. Meanwhile, two papers published in Science, a leading research journal, provide further reasons for caution. One suggests that the knock-on effects of growing biofuel crops, in terms of displaced food crops and extra fertiliser (an important source of a greenhouse gas called nitrous oxide), make the whole enterprise risky. The other points out a dangerous inconsistency in the way the Earth’s carbon balance-sheet is drawn up for the purposes of international law. Continue reading

Climate change will hit developing world harvests hardest

Nature news
Climate change will hit developing world harvests hardest
Report quantifies link between global warming and food security.
Natasha Gilbert

Developing countries could see large drops in crop yields by 2050 if climate change is left unchecked, according to a US report, potentially leaving as many as 25 million more children malnourished compared to a world without global warming.
see detail report in following link

Boost production with human urine and wood ash

ScienceDaily (Sep. 17, 2009) — Results of the first study evaluating the use of human urine mixed with wood ash as a fertilizer for food crops has found that the combination can be substituted for costly synthetic fertilizers to produce bumper crops of tomatoes without introducing any risk of disease for consumers.
In the study, Surendra Pradhan and colleagues point out that urine, a good source of nitrogen, has been successfully used to fertilize cucumber, corn, cabbage, and other crops. Only a few studies, however, have investigated the use of wood ash, which is rich in minerals and also reduces the acidity of certain soils. Scientists have not reported on the combination of urine and wood ash, they say.

The new study found that plants fertilized with urine produced four times more tomatoes than nonfertilized plants and as much as plants given synthetic fertilizer. Urine plus wood ash produced almost as great a yield, with the added benefit of reducing the acidity of acid soils. “The results suggest that urine with or without wood ash can be used as a substitute for mineral fertilizer to increase the yields of tomato without posing any microbial or chemical risks,” the report says.

Journal reference:
  1. Pradhan et al. Stored Human Urine Supplemented with Wood Ash as Fertilizer in Tomato (Solanum lycopersicum) Cultivation and Its Impacts on Fruit Yield and QualityJournal of Agricultural and Food Chemistry, 2009; 57 (16): 7612 DOI: 10.1021/jf9018917

Clean power V dirty coal: some facts

• One billion people are hungry. Temperature rises of 2 to 3 oC will mean an extra 200 million people could face hunger.

• If we carry on pumping greenhouse gases (like CO2) into the atmosphere, there’s a 50% chance the global temperatures will rise by 5 oC or more in the coming decades.

• One coal power station pumps out the same amount of CO2 in a year as 30 developing countries combined.

• The UK is the windiest country in Europe. We could power ourselves several times over using renewable energy.

• If we covered just 3% of the Sahara desert with solar panels we could generate all the electricity the world needs.

• Kenya has the highest number of solar panels, per person, in the world.

• The Philippines already generates 27% of its electricity from geothermal energy.
Source- Action Aid