OneWorld South Asia: The Bill and Melinda Gates Foundation has announced a grant to aid the production of stress-tolerant rice varieties. The US$19.9 million grant for the Philippines-based International Rice Research Institute (IRRI) will be used to develop suitable rice varieties to help poor farmers in Africa and Asia mitigate the effects of climate change. Announced last month (25 January), the three-year funding is part of a US$ 306 million package of agricultural development grants …