Harvard's ADS (http://adsabs.harvard.edu http://adsabs.harvard.edu) has recently been revamped and is very effective in it's domain of (astro-)physics. Perhaps

Harvard's ADS (http://adsabs.harvard.edu http://adsabs.harvard.edu) has recently been revamped and is very effective in it's domain of (astro-)physics. Perhaps someone could base a Scholar replacement on that?