Want to Prune Trees More Easily? Use Physics Ifeadi C. 00:19 Feed: All Latest, Zero Tech Blog A blade will slice into a limb at some particular minimum pressure—but there are different ways to reach that value. via Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsHow you can help victims of Indonesia's earthquake and tsunamiStaten Harry is the internet's cutest lip-sync starGet help building an online portfolio with Format, on sale for 65% offGorgeous collectible 'He-Man' action figures are coming from MondoBluetooth speakers on sale and ready to partySave a ridiculous $3,000 on this Sony 4K TV from Amazon, plus get free shipping