Spatial Data Objects. The geometry and geography data types support sixteen spatial data objects, or instance types. However, only eleven of these instance types are instantiable; you can create and work with these instances (or instantiate them) in a database.
Rewiring the grain. Metabolic engineering. Golden Rice technology is based on the simple principle that rice plants possess the whole machinery to synthesise Î²-carotene, and while this machinery is fully active in leaves, parts of it are turned off in the grain.
Golden Rice (R) and ordinary rice, in the hands of a scientist at the International Rice Research Institute in The Philippines. Erik De Castro / Reuters. One of the world's great humanitarian crises has a simple cause and, some researchers argue, a simple solution. But that's where the story gets complicated.