Within the next few years,many forest researchers believe,companies will be totally revamping arboreal genomes,creating wholly new kinds of trees -- short,fat,almost branchiess -- that will look nothing like the pines and birches in suburban backyards.

• 许多森林研究人员相信在未来的几年内，林业公司会完全改变乔木的基因组，创造出全新的树种一矮小、健硕、元枝一和郊区场院里看到的松树及桦树毫无相似之处。