>> Abul Hussam, a chemistry professor at George Mason University in Fairfax, was awarded the Grainger Challenge Prize for Sustainability. The Bangladesh-born US citizen was awarded by the Lake-Forest, USA-based Grainger Foundation for his work on a filtration system that prevents serious health problems caused by arsenic in water.

>> More disgruntled Zimbabwean government employees have joined striking doctors and nurses to demand higher salaries as the economy continues to crumble. Lecturers at the country's eight state-owned educational institutions have become the third group of employees