李某与贾某是高中同学，高中毕业之后有十多年没有见面。某日在北京偶遇，两人均特别激动，李某一拳打向贾某以示哥们情谊，不料贾某随即倒地昏迷不醒，在被送往医院的途中死亡。经法医鉴定，贾某患有严重的脾肿大。李某从来没有听说过贾某患有这种疾病，李某的行为与贾某的死亡之间不存在因果关系 ...
Take Researchers in the Power Sources R&D group at Sandia National Laboratories have been driving nails into batteries, heating them to extreme temperatures, overcharging them and putting them into some of the most adverse conditions possible to see how much abuse they can take before they blow up...