Another Step Towards Securing Our Future in Energy 【Speech Video】 This morning, President Obama signed a Presidential Memorandum on fuel efficiency standards, an initiative that will build on his goal
One example is a trick in which a gene allows a cell, even as the drug approaches the cell, 有一个例子很神奇，基因能让细胞在药物接近之前， to push the drug out, before the drug can have any effect. 把药物推开，药物根本来不及起任何作用。 Imagi
We understand that the great arc of human history bends towards people coming together in ever greater numbers, 回顾历史，历史的车轮总是青睐于更大基数的集体， from tribes to cities to nations -- to achieve things that we co
On Father's Day weekend, President Obama reflects on his experience as a parent and discusses the challenges and necessity of being a good father Hi, everybody. This Father’s Day weekend, I’d like to
