Books on Smart Thinking

Waterstones has a section on Smart Thinking. It says “Think smart with our selection of fantastic eBooks for expanding your mind, inspiring awe and improving your life”. I recently purchased some for the school library and for myself. ****** Quiet: The Power of Introverts in a World That Can’t Stop Talking More on Susan Cain Wikipedia TED talk 2012 *** The Information: A History, a … Continue reading Books on Smart Thinking

Night soil as fertilizer

In North and Central Vietnam it is common among farmers to use excreta from the family double vault composting latrine (DVC) as fertilizer in the fields. The official Vietnamese health guidelines stipulate a six-month period of composting before applying excreta to two of their three annual crops. However, farmers in this region cannot afford to follow these guidelines and this paper presents the reasons why.In their efforts to ensure … Continue reading Night soil as fertilizer

The water footprint of humanity

Water footprints are estimated per nation from both a production and consumptionperspective. International virtual water flows are estimated based on trade in agricultural and industrial commodities. The global annual average WF in the period 1996–2005 was 9,087 Gm3/y (74% green, 11% blue, 15% gray). Agricultural production contributes 92%. About one-fifth of the global WF relates to production for export. The total volume of international virtual water flows … Continue reading The water footprint of humanity

Insect Cyborg

In 2006 the US Defense Advanced Research Projects Agency (Darpa) asked America’s scientists to submit “innovative proposals to develop technology to create insect-cyborgs” It was not your everyday government request, but it was an utterly serious one. For years, the US military has been hoping to develop “micro air vehicles” – ultra-small flying robots capable of performing surveillance in dangerous territory. Building these machines is not easy. … Continue reading Insect Cyborg