On a crisp Winter's morning in Florida, January 28, 1986, the Space Shuttle Challenger was launched with seven persons aboard, including Christa McAuliffe, a 37-year-old teacher from New Hampshire, wh

We realized online video was a new media 我们认识到 网络视频是一种新媒体 that it could unleash the creativity of people all over the world 它能释放出世界各地人们的创造性 and also spark the curiosity of people who wanted to watch t

From Montgomery we flew to Washington. 我们从蒙哥马利飞往华盛顿。 It was the first time I had ever been on an airplane. 那是我第一次乘飞机。 In fact it was the first time that I traveled out of the South. 事实上那是我第一次离开南部。 On

Time to put middle class front and centerBy Vice President Joe BidenJanuary 30, 2009 For years, we had a White House that failed to put the middle class front and center in its economic policies. Pres

We want to accelerate adoption of sustainable building and development practices. 我们想要提高高承受性建筑及其应用的采纳度。 We want more innovation. 我们想拥抱更多革新。 But a lot of times, whole categories of innovation -- 但是很多情况