A Five-Step Food Safety Plan

Besides the legislative and administrative efforts made by China to tackle food safety issues, a raft of measures is being introduced to punish errant producers and enforce stricter

Geologist Plans Volcano Safety for Ecuador

从海啸到火山爆发,自然灾害给人类社会带来巨大的灾难,而科学家们也在不断努力对其进行预测和积极防御。美国华盛顿大学的一位地质学家就带领学生深入中美洲国家厄瓜多尔的活火山群,寻找切实可行的对应火山爆发的方法。