A “superacid” much stronger than automobile battery acid has enabled a key advance toward a new generation of LED lighting that’s safer, less expensive and more user friendly. Researchers at Oregon State University used the organic superacid to improve the performance of “quantum dots” made from copper indium disulfide, a compound much less toxic than the lead or cadmium that typically serve as the basis for the light-emitting nanocrystals. Used in optics and electronics, quantum dots have been around for s

Source: ‘Quantum dot’ lighting technology takes forward leap thanks to new superacid treatment

When a task calls for intuitive knowledge, as in “subtracting means taking something away,” its complexity often goes unnoticed. However, when intuitions are not mobilized – having to grasp, for instance, that subtracting means “finding the difference” – the task is considered difficult, and seemingly requires the use of specific educational strategies. Researchers at the University of Geneva (UNIGE), Switzerland, have demonstrated that teachers sometimes struggle to understand the difficulties encountered

Source: Teachers, pedagogical skills, and the obstacle of intuition

“I think that that’s what’s beautiful about Global Citizen, that it really is in the hands of the citizens themselves. Our job is just to create the tools, the technological tools so that you can call your member of Congress with great ease.” Evans told CNBC’s “The Brave Ones.” It’s these actions that have been Evans’ focus, a way to create a movement of people to influence decision-makers to make policy commitments and continue to deliver aid. They are the aims of Global Citizen..

Source: Global Citizen founder Hugh Evans on how to end extreme poverty

As the daughter of a mother who worked overseas, I always looked forward to receiving pasalubong from Mama when we were kids. It came every few months in the form of balikbayan (return [to] country) boxes filled with chocolates, canned goods, toiletries, cosmetics, clothes, shoes and anything else that couldn’t be bought or found in the Philippines. These handpicked items were carefully packed by my mother, sent in the hopes of filling the void left by a parent abroad.The Filipino word ‘pasalubong’ has its roots in the word salubong, which means ‘meet’ or ‘welcome’. When prefixed by pa, the act of salubong turns into an object relating to it – ‘to meet’, ‘to welcome’. Pasalubong, therefore, is a souvenir – a gift given to someone.

Source: BBC – Travel – What the Philippines can teach us about giving

SYDNEY/SINGAPORE (Reuters) – The captain of the Malaysian Airlines aircraft that vanished somewhere in the southern Indian Ocean with 239 people on board had flown a route on his home flight simulator six weeks earlier that was “initially similar” to the one actually taken, Australian authorities said on Tuesday. The details were contained in a 440-page final report by the Australian Transport Safety Bureau (ATSB) on the unsuccessful search for flight MH370. The disappearance of the Boeing 777 on March 8,

Source: Report on MH370 finds ‘initially similar’ route on pilot’s flight simulator