Chicago Sun-Times: Joshua trees can live hundreds of years in the desert. However, they may have met their match here in Joshua Tree National Park: global warming. One study estimates that there may be no Joshua trees left here within a century. Veteran park ranger Joe Zarki points to an invasive red brome grass, which has proliferated here in the last few years, and explains that the rise in temperatures has helped it thrive — but when it dries out, the grass feeds fires, allowing the …