This week, first lady Michelle Obama puts literally everyone else to shame with a new video of her working out in the White House gym; photos from the National Geographic Traveler Photo Contest blow us away with majestic rhinoceros, astronomic waterfalls and landscapes we'd travel to in a heartbeat; and a professor has an important message to his freshman students about higher education, because 'for your professor, a course is an opportunity for you to make yourself richer and stronger'. 更多
