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Also: A study shows more young kids get small screen time; a suspect in shootings in 2 states is arrested; and there's a report that some Iditarod dogs tested positive for a banned drug.

Also: Toys 'R Us files for bankruptcy protection; Senate Republicans try again to replace Obamacare; and there are 250 new words in Merriam-Webster's dictionary.

Also: CVS moves to buy Aetna, the U.S. and South Korea begin huge air military drills, and an Australian lawmaker proposes to his partner as same sex marriage legislation is introduced.

Also: A Saudi coalition will ease a blockade on Yemen; U.S. Democrats attend the climate summit in Germany; and a federal jury resumes work in the conspiracy trial of Sen. Bob Menendez (D-NJ).

Also: NSA is searching "vast amounts" of Americans' emails, New York Times reports; winning tickets for huge Powerball jackpot sold in Minnesota and New Jersey; rare Sumatran tigers born at Washington's National Zoo.

Also: The CIA continues to send bags full of cash to the Afghan leader, The New York Times reports; an explosion, possibly due to a gas leak, injures dozens in Prague; Syria's prime minister survives a bombing; and the last spire is to be placed above new World Trade Center tower.

Also: Workers' riot shuts down Foxconn plant in China; Libya moves to disband rogue groups; search is suspended for mountain climbers caught in Nepal avalanche; Homeland and Modern Family are big winners at Emmy Awards.

Also: In video, commander of Syria's military police says he has defected; Egypt has a new constitution; gunman in Western New York left note saying that killing is "what I like doing best;" actors Jack Klugman and Charles Durning have died.

Also: Syrian conflict's humanitarian toll is "staggering;" MIT does some soul searching after Aaron Swartz's suicide; Robert Roberts plans to soon be back on Good Morning America; final four teams are set in NFL playoffs.

Also: An Italian court orders a murder retrial for Amanda Knox; North Korea issues a bellicose statement, warning of attacks on U.S.; Russian oligarch Boris Berezovsky apparently died by hanging; and the world's longest dodgeball game may have set a world record.