Boston bombings trial to begin, two years on

Boston will revisit the horror of the 2013 Marathon bombings on March 4 when the 21-year-old accused of carrying out the worst attack on US soil since the September 11 strikes goes on trial.
      
Kyrgyzstan-born US Muslim Dzhokhar Tsarnaev faces the death penalty if convicted of using a weapon of mass destruction to bomb Boston's signature race, killing three people and wounding 264, on April 15, 2013.
      
He pleads not guilty to 30 federal charges in connection with the attacks and the killing of a police officer while he and his 26-year-old brother Tamerlan were on the run from the FBI.
      
Tamerlan was killed in a shootout with police, leaving the younger Tsarnaev to face charges for attacks that devastated the northeastern US city of 645,000 and revived American memories of 9/11.
      
It will be one of the most watched American trials since Timothy McVeigh was convicted and later executed for the Oklahoma City bombing that killed 168 people in 1995.
      
Prosecutors say the brothers, both of part Chechen descent, built their bombs based on instructions in Al-Qaeda's English-language magazine Inspire but that they appear otherwise to have acted alone.
      
An all white jury of eight men and 10 women was sworn in Tuesday, capping a fraught two-month selection process delayed by historic snowfall and repeated attempts to move the trial elsewhere.
      
The jury who were whittled down from more than 1,300 candidates to decide Tsarnaev's fate, includes a student, a house painter, an air traffic controller and an unemployed auditor.
      
The defense filed another demand for a change of venue Monday, claiming that 48 of the 75 provisionally qualified jurors either believe Tsarnaev...