3. HOUSE OF CARDS (Netflix, Feb. 27) Netflix’s political grand guignol gets a 13-episode third season. Kim Dickens of “Treme” joins Kevin Spacey and Robin Wright in the cast, and two members of Pussy Riot will make a guest appearance.
4. In 2010, the Martin Aircraft Company introduced a jetpack it called "the world's first piratical jetpack." The jetpack even won a spot in Time's Top 50 Inventions of 2010. While its development has been on since 1981, the world's first jetpack is known to have flown in 1958. It was designed by Wendell Moore, a researcher at Bells Aerosystems. Early prototypes of Wendell's jetpack could reach a height of 5 meters (16 ft) and remain airborne for three minutes. This attracted the attention of the US Army, which funded the project with $150,000. Several test flights were later done for the US Army and even for JFK himself. The army later stopped paying for more research into the project because the flight time and distance were not convincing enough. NASA also wanted to use the jetpack for their Apollo 11 mission to serve as backups in case their lunar module malfunctioned. They later changed their minds, going for the lunar rover instead. After this setback, Bell discontinued further research on the jetpack.
西西软件园 Though the Dutch financial markets then had none of today’s technology, they employed many of the same practices that traders use today. Investors bought securities, sometimes borrowing money with loans secured by the shares they were buying. In today's language, they bought shares on margin. Lenders protected themselves by demanding a “haircut” – collateral in cash or securities that exceeded the loan amount by a specified percentage. If the value of the securities dropped below that specified percentage, the lender would demand that the investor put up additional money to stay in line with the haircut. If the investor couldn’t come up with the added margin, the lender was entitled to liquidate the securities and recoup the loan amount.