March 4, 2009 10:04 am Man Pounds Pavement To Protect The Air Two-years ago, Carl Lankowski started walking to work. He’s now traversed more than 24-hundred miles and he’s still going. Local 3:28 Social media and teens' mental health: A psychiatrist weighs in 1:41 DC-area police ramp up traffic enforcement in pedestrian safety campaign 3:05 ‘We need real liberation': George Washington University pro-Palestinian protest enters fifth day 2:17 GW asks to students to move pro-Palestinian demonstration 3:01 “It's 100% different”: Community reflects on emergency curfew at National Harbor