加州提出保护其著名约书亚树的计划 The California Department of Fish and Wildlife has released a proposed plan to protect the state's famous Joshua trees.

利用真实的树木将自然带入室内 There is a growing movement worldwide to use plants in building design to establish closer connections with nature and soften hard city styles.

密歇根州的研究人员致力于培育更强壮的苹果树 Researchers in the U.S. state of Michigan are looking for ways to help apple trees survive bad weather.