Both are good for the environment, too. Adobe's JS VM is way faster (i.e., more efficient) than the ones that ship with web browsers. And Sun's Java is way fast too. To the extent scripting languages (Python, Ruby, ...) run on the Java VM instead of their own, lots of cycles (i.e., energy/emissions) are saved.
Kitchen Linker lives in interesting and cool times!
Blogs, environment, politics, technology and the kitchen link, often all in one post!