Citrus greening disease: The effect on U.S. orange crops
By: B. Stone
Citrus Greening Disease has the US citrus industry terrified, and for good reason too. This bacterial infection threatens to obliterate entire groves of citrus, potentially wiping out the species altogether if left unchecked. Citrus Greening Disease is a bacterial disease first discovered in China in...
What are brown clouds?
By: Nayab Naseer
Brown clouds are giant brown layers of thick haze composed of pollutants like soot and other particles, hanging over much of Asia and Indian Ocean every year between January and March.The UNEP Indian Ocean Experiment (INDOEX) first observed such a pollution layer during their...
The importance of organically grown food
By: David Nuttle
United Nations Food and Agriculture Organization (FAO) planners have indicated that organic production of foods will be the only means possible to provide enough food for growing world populations in future years. Factory farming, or non-organic food production, requires a high and sustained level of...
Why is groundwater important?
By: Imogen French
Life on Earth depends on water, especially fresh water, and without it we would not be here. Groundwater is an essential reservoir of fresh usable water that we can tap into when rain or surface water are not plentiful enough. A quarter of the world's...
Is Human Space Travel to the Planet Mars too Dangerous
By: Brad Smith - 428492
Earth, our home, has nursed our species of humans for untold years & now, in the last 200 years or so we as a species are maturing at an ever accelerated rate, (knowledge doubles every few years). Just like a toddler, who first crawls, then...
By: Michael Totten
In its native environment and native climate, an ash tree is a species in perfect balance within its ecosystem. As one of the first trees to spring back after a forest fire, ash trees are very tolerant of the high alkali content of post-fire ashes...
By: Gemma Wiseman
Groundwater is an important alternative to surface water. Sadly, this was not fully recognised until late in the 20th century when population pressures, variable rainfalls and increasing polluted water sources forced a search for alternatives. Groundwater, the forgotten, hidden resource attracted great scientific and geographical...
By: Pamela Kay
Sustainable agriculture is a multi-faceted concept, which encompasses those things that must be done to protect the earth's unified eco-systems to ensure sufficient food, clean water and clean air for this generation and those to come.The importance of sustainable agriculture becomes clear when you...
Why sustainable agriculture is important in today's world
By: Patricia Stewart
Growing food in a way that empowers people, rebuilds the environment and sequesters carbon are just some of the benefits of sustainable agriculture. This term, which used to describe the ethic of organic agriculture, combines cost effective approaches to agriculture with an environmental awareness when...
How forest fires help ecosystems and forests
By: Imogen French
Seeing the trail of devastation and destruction in Victoria, Australia this week (February 2009) it is hard to imagine that anything good can come of a forest fire. Wild fires like this are relatively common in many of the warmer, forested parts of the world:...

 

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