. >> i'm russell beard in northern kenya where local hero martin wheeler is taking elephant conservation to new heights. >> i'm jasmeen qureshshi in monterey bay california where researchers have discovered that sea otters

. >> and i'm russell beard in flanders in

. >> i'm russell beard in barbados meeting the islanders who are buiding a green ecomomy.

. >> and i'm russell beard in bangkok to meat a team innovative urban farmers turning air polution into protein. and i'm amandeep bhangu in england

. >> i'm russell beard in the sea of cortez mexico to explore the future of fish farming >> and i'm gelerah darabi in kapama park south africa where a specialist team of conservationists are fighting back against rhino poachers

. >> and i'm russell beard in bangkok to meat a team innovative urban farmers turning air polution into

. >> i'm russell beard in northern kenya where local hero martin wheeler is taking elephant conservation to new heights. >> i'm jasmeen qureshshi in monterey bay california where researchers have discovered that sea otters may play a key role in revitalizing our oceans.

. >> i'm russell beard in barbados meeting the islanders who are buiding a green ecomomy.

south sudan: country of dreams only on al jazeera america >> i'm russell beard in the sea of cortez mexicoto explore the future of fish farming >> and i'm gelerah darabi in kapama park south africa where a specialist team of

. >> and i'm russell beard in flanders in belgium, to meet to meet the urban miners turning rubbish into

russell says she not only saw her daughter katherine become interested in islam, including covering her head but she witnessed a transformation in him, as well. both physically as he grew out his beardlosophically. testifying over time he became more religious. every time i saw him, he talked about it. she testified she texted katherine shortly after the marathon bombing. and asked her if she and her family were okay. katherine texted she was at work with her daughter eight miles from the bombings adding as far as i know he was home in cambridge. crawford said she found it strange that katherine texted a political statement about the bombing saying although a lot more people are killed every day in syria other places, innocent people. this at times emotional testimony came after the defense's opening statement in which defense attorney david brup told jurors it was your duty to vote guilty. you were required to vote guilty because the evidence proved beyond a reasonable doubt. but the death penalty doesn't work that way. >> for more coverage for the penalty phase of the bombing trial, be sure to watch "nbc nightly news" tonight at 6:30, right here on nbc 10. >>> opening statements a