Tag Archive: grey water systems

Jan 24

What Is ‘Desertification’ And Why Is It Important To Know About?

Tweet Dear EarthTalk: Can you explain what “desertification” is and why it is an important environmental issue?

Jan 23

Groundwater Overuse May Make Arsenic More Common in South Asian Wells

TweetA century of exploitation of groundwater supplies has drawn down water tables across Vietnam, making it difficult to avoid water contaminated with arsenic even at deeper depths, according to a new study. In tests of 512 private wells reaching depths of 10 to 50 meters (33 to 164 feet), researchers found that 27 percent contained …

Jan 20

High-tech and low-carbon travel trends for 2011

Tweet Last week, we began our gaze into the travel crystal ball for a glimpse of what the new year will bring. We focused on where we’ll be going and how much it will cost us to get there. This week we’ll focus on two trends: the technology making life easier – or more confusing …

Jan 17

Climate changes tied to fall of Roman Empire

TweetA look back 2,500 years at how climate and society have been intertwined A prolonged period of wet weather spurred the spread of the bubonic plague in medieval times, according to a new study. And a 300-year spell of unpredictable weather coincided with the decline of the Roman Empire.

Jan 17

SA scientists seek backers for trash-to-energy innovation

TweetScientists and engineers at the University of the Witwatersrand, in Johannesburg, have developed a hybrid energy solution, based on the Fischer-Tropsch (FT) chemical process, which could be deployed at municipal rubbish dumps to produce both electricity and transport fuels from fresh garbage. Centre of Material and Process Synthesis (COMPS) director Professor Diane Hildebrandt tells Engineering …

Jan 05

Retailers check water usage

Tweet Shoprite Checkers, Woolworths and Pick n Pay, have expressed concern over speculation that a water crisis is looming in South Africa. The three major retailers say they have put in place rigorous measures to ensure their products are safe for consumption and are free of any potential contamination from polluted water supplies.