【推荐1】For over one hundred and fifty years, Americans of all social classes have worn blue jeans.     1    Whether they are worn for work or for fashion today. Strauss' invention continues to be popular not only among Americans but also among people around the world.

Levi Strauss was born in Germany in 1829.     2     He grew up in Kentucky before moving to New York in 1847. Before becoming an American citizen and moving to the West in 1853, Strauss worked in his brother's dry goods business. This gave him a chance to produce his famous invention. After the gold rush of 1949, Strauss decided to move to the West to seek his fortunes.   

Strauss did not want to be a person who searched an area for minerals. Instead, he knew he could make a good living by selling supplies to the miners. At first, he planned to sell sewing supplies and cloth.     3    When he heard miners complaining that their clothes were easily broken or they usually tore their pockets during mining, he decided to use a special fabric to make pants for the miners. These pants proved so popular that he quickly ran out of materials to make more.

In 1873, Strauss received a letter from a Jewish tailor named Jacob Davis who had invented a process of connecting pockets with copper rivets(铆钉)．This made the pants last a long time. Because Davis did not have the money to patent his idea, he offered to share it with Strauss if Strauss would agree to pay for the patent.     4       

The business has been growing ever since and Levi Strauss' company is now one of the largest clothing companies in the world.   

By the time Strauss died in 1902, he had made a great contribution to American fashion.     5    

【推荐2】Eldon Musk, the entrepreneur and CEO of Tesla and Space X, may have a little more time on his hands, as he's leaving his position on the board of the Open AI, according to a blog post.

The departure is likely the result of Tesla's moving into the field of Artificial Intelligence (AI), which he said in 2017 would be the “best in the world” and would even be able to “predict your destination.” Musk will continue to “donate and advise the organization,” Open AI said in a blog post on Feb. 20, adding that “As Tesla continues to become more focused on AI, this will avoid a potential future conflict for Eldon.”

Musk and Y Combiner CEO Sam Altman co-founded the nonprofit enterprise in December 2015, its mission is to develop safe artificial general intelligence and ensure those developments are made public. Open AI researchers published a paper on the site ArXiv. org, detailing the possible secure threats that come with “malicious” AI. In fact, Musk has heard the “evil AI” alarm several times. On Aug. 11, 2017, he warned that artificial intelligence poses a bigger threat to humanity, and he told a gathering of state governors that the government needs to regulate AI before robots start “killing people.”

Musk's departure from the Open AI board could mean big things for Tesla. As Eton Goodbye, a financial reporter, noted on Futurism, the move “could signal that Tesla is more deeply committed to their own AI projects than we thought.” He added, “Those who have had their ears to any rumors (谣言) that Tesla is ready to deliver vehicles capable of Level 5 autonomy could take this new Open AI development as a sign that the company is inching closer to that unapproachable goal.” No company has reached that level of autonomy, which means that a driverless car could navigate any road under any conditions and that all the human “driver” would need to do is to input a destination.