SN Online SN Online By Science News August 26, 2011 at 10:32 am - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print SCIENCE & THE PUBLIC BLOG Space junk is lasting longer, making cleanup more urgent. See “Growing need for space trash collectors.” HUMANS A 2,000-year-old human skull shows signs of having undergone surgery. Read “Ancient Saharan head cases.” Instant messaging can’t replace the soothing sound of Mom’s voice. See “Moms talk, daughters’ hormones listen.” GENES & CELLS Breaking bonds between protein buddies may help prevent Parkinson’s. Learn more in “ Parkinson’s protein comes in fours .”