Stick with natural resources, but stay abreast of new developments in science and technology. That’s one takeaway from our poll on industry clusters. Forty percent of readers say agriculture and forest products should be a top priority for state investment. A greater number prioritize manufacturing, along with education, technology and science. Green clusters, including solar and wind, languish on the bottom rung for 24% of respondents, while 29% are most bullish on two old stalwarts: health care and semiconductors.