CNN: In 2011, approximately 721,800 patients acquired infections at hospitals.
CNN: The proposed legislation would end part of the National Security Agency's bulk phone records data collection program.
BBC: The World Health Organization estimates that seven million people died as a result of air pollution in 2012.
Reuters: People who were prevented from enrolling in the federal health insurance marketplace due to technical glitches will be allowed to sign up after March 31.
BBC: Malaysia's prime minister announced that missing flight MH370 ended in the southern Indian Ocean.
Bloomberg: The Tokyo-based digital currency exchange located 200,000 of the 850,000 Bitcoins it said had gone missing.
CBS: U.S. gum sales have plunged 11% over the last four years.
Reuters: A survey revealed that approximately half of Americans believe in at least one medical conspiracy theory.
USA Today: To commemorate the social networking site's eighth birthday, it launched a website called first-tweets.com.
BBC: Research suggests that sleep loss may cause a permanent loss of brain cells.
CNET: Sony unveiled Project Morpheus, a virtual-reality Playstation 4 headset.
BBC: The Russian president and the leaders of Crimea have signed a bill to absorb the peninsula into Russia.
Bloomberg: Researchers found that foods high in omega-3 do not reduce the risk of heart disease.