In two days, the crowdfunding efforts triples what it has raised toward its $50,000 goal.

Meanwhile, investigators question the brothers’ parents, while Joe Biden calls the suspects ‘perverted, cowardly, knockoff jihadis.’

The Tsarnaev brothers’ relationship may have intensified when both parents left the country within the past year or so, leaving Tamerlan as Dzhokhar’s dominant family member.

“Never underestimate the charitable impulse of the American people,” says One Fund Boston’s administrator, Kenneth Feinberg.

In the years before the Boston Marathon bombings, Tamerlan Tsarnaev fell under the influence of a new friend and a Muslim convert, family members say.

‘The reality is you just try to save his life,’ says one lawyer who has defended several terrorism suspects.

David Henneberry of Watertown says he feels lucky to be alive.