Authorities are sounding the alarm about flakka, a new synthetic drug. Dr. Jon LaPook joins CBSN to explain flakka’s effects and dangers. Source

Singer John Legend staged an incredible wedding for his two dogs, dressing them up and serenading them with his song “All Of Me.” The video of the canine wedding was to promote Legend’s charity. Source

In the past six years, “River Monsters” host Jeremy Wade has traveled the globe to fish for everything from deadly stingrays to man-eating piranhas. He recently caught CBS News’ Michelle Miller on his line for a swampland adventure of their own. Source

Web extra: Nancy Sinatra, Frank Sinatra’s daughter, calls rumors about her father having a child with Mia Farrow “nonsense.” Source

“Evidence I have seen confirms that these detention officers violated well-established Sheriff’s Office policies and procedures,” Collin County Sheriff Jim Skinner said. Source

New documents obtained by CBS News detail plans for her history-making work outside the White House Source

A photographer took this gripping image of a child in a Syrian refugee camp who put her hands up when the camera was pointed at her. The picture shows the impact of growing up in a war-torn society. Source

The White House has shared few details about first lady Jill Biden’s return to teaching, even though it’s the first time in history a first lady has held a full-time job outside the East Wing. But getting Dr. Biden back to her students wasn’t easy. CBS News White House reporter Bo Erickson joins CBSN’s Lana Zak to discuss what went on behind the scenes. Source

CBS earned 62 nominations Tuesday for shows like “The Young and the Restless,” “The Bold and the Beautiful,” “The Price is Right” and “Let’s Make a Deal.” Variety’s New York editor Ramin Setoodeh joins “CBS This Morning” to break down 2015 nominations. Source

A new HBO documentary of Frank Sinatra’s life features archival interviews of the crooner and commentary from his family. Also, the ladies of “The Talk” announced the Daytime Emmy nominations, and received an honor of their own. Suzanne Marques reports on the day’s top entertainment headlines. Source