In the hospital, where their family member lay gravely ill, the relatives gathered in the waiting room. Finally, the doctor ...

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...

• 儿童和青少年： 15-19岁青少年癌症发病率持续上升，14岁及以下儿童的发病率有所下降。1970年以来，儿童癌症死亡率下降了70%，青少年死亡率下降了63%，很大程度上因为白血病治疗手段进步。