Its true that its taken a long time but its due to the fact that their first attempt didn't produce enough beta carotene. The second attempt worked and is still being tested in field trials in China, Bangladesh and the Philippines.
Its true that we can also combat VAD with supplements, but shouldn't we have multiple strategies to combat it?
Regarding the article, who is to decide when we should abandon an approach? You could apply the same argument to Organic Food. After 30 years, it still only accounts for more or less 1% of global food production, and there is evidence that its not necessarily more environmentally friendly than conventional agriculture. By that logic we should also abandon it.
Its true that we can also combat VAD with supplements, but shouldn't we have multiple strategies to combat it?
Regarding the article, who is to decide when we should abandon an approach? You could apply the same argument to Organic Food. After 30 years, it still only accounts for more or less 1% of global food production, and there is evidence that its not necessarily more environmentally friendly than conventional agriculture. By that logic we should also abandon it.
http://www.thedailystar.net/frontpage/vitamin-rice-now-reali... https://ourworldindata.org/is-organic-agriculture-better-for...