In terms of saving energy science should be as green as reasonably possible. But, in my opinion, some pro-environment organisations can be very anti-science.
Greenpeace argued in court to ban stem cell research on human embryos which had the potential to save lives. They are also opposed to nuclear energy and were forced to retract an anti-nuclear advert because their ‘facts’ were wrong. They oppose all forms of genetically modified crops including crops created to cure chronic vitamin deficiencies.
I think that everyone, regardless of their occupation, should seek to be as green as possible. Of course, improvements in energy efficiency or animal welfare need to be balanced against scientific and medical advances, since short term cost can lead to long term gain. A lot of science is already very efficient, though, just to try and save money!