Know It All: The day's top stories at NBC News

Here's a snapshot of some the stories NBC News is following:


Bradley Manning, the soldier who leaked 700,000 secret government documents, will learn his fate on Wednesday morning. Army Col. Denise Lind is scheduled to impose a sentence for the 25-year-old at Fort Meade, Md., at 10 a.m. ET. Lawyers for Manning don’t want the sentence to “rob him of his youth,” but the military says the former intelligence analyst should spend 60 years in prison. Read it here.


The spokeswoman for Hannah Anderson’s father said Brett and Christina Anderson did not meet James Lee DiMaggio “until the sixth month of Tina's pregnancy with Hannah,” and Brett Anderson's DNA was used to identify the body of his dead son, Ethan. The statement came amid reports that the DiMaggio family would request DNA samples from the Andersons to determine paternity of Hannah and Ethan. Read it here.


The defense of alleged Fort Hood shooter Maj. Nidal Hasan could be brief, if his actions in his trial to date are any indication. The prosecution presented 89 witnesses against the former Army psychiatrist, who stands accused of killing 13 people and wounding dozens more. Hasan did not cross-examine any of them. The court-martial resumes Wednesday. Read it here.


Students will return to the Atlanta-area elementary school where officials say a man fired shots at police on Tuesday. Superintendent Michael Thurmond in DeKalb County, Ga., said absences will not be counted at Ronald McNair Discovery Learning Academy on Wednesday, according to local NBC News affiliate WXIA. Read it here.


Armored backpack inserts and clipboards may appeal to some parents of young children in the wake of school shootings like that in Newtown, Conn., last year, but security experts say they’re largely impractical. “If you need a bulletproof backpack, wouldn’t the child also need a bulletproof front pack, a helmet and a Captain America shield?” one school safety consultant says. Read it here.


Whatever GOP lawmakers may say about ObamaCare, young conservatives are queuing up to make use of a provision that allows young adults under the age of 26 to stay on their parents’ insurance, according to a survey published Wednesday. The study by the pro-healthcare-reform Commonwealth Fund found that “more Republicans than Democrats” took advantage of the young adult provisions of the law. Read it here.


A draft of an upcoming United Nations climate report reinforces what scientists have been saying for years: The main cause of long-term global warming is carbon dioxide emissions. Native Inuits in Greenland tell NBC’s Ann Curry about how they’ve witnessed the effects of climate change near the North Pole. Watch it here.