additional support is provided by the abrams foundation, committed to excellence in journalism. rk foundation, dedicated to heightening public awareness of critical issues. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. and by the frontline urnalism fund, with major support from jon and jo ann hagler. and additional support from the millicent and eugene bell foundation. (water burbling) >> laura sullivan: in 2015, a marine biologist came across a sea turtle in distress. >> oh. >> i don't want to pull it too hard. >> yeah, i mean, it's bleeding already. oh, poor baby. i'm sorry. (bleep) (bleep) christ. that is plastico. oh, man. >> that's plastic. >> don't tell me it's a freaking straw. >> it's just freaking... >> sullivan: her video of the encounter quickly went viral. >> this poor sea turtle. >> sullivan: it would attract more than 35 million views. >> ...became a rallying cry for action. >> sullivan: and focused public attention on a growing problem. >> that turtle video certainly did have an impact. >> plastic pollution:

additional support is provided by the abrams foundation, committed to excellence in journalism... john d. and catherine t. macarthur foundation, committed to building a more just, verdant and peaceful world. park foundation, dedicated to heightening public awareness of critical issues. and by the frontline journalism fund, with major support from jon and jo ann hagler and additional support form koo and patricia yuen. “support for “american insurrection” is provided by the wnet group's “exploring hate” initiative with principal support by the following: and additional major funding from... with additional support from... corporate support for frontline is provided by... >> hi, i'm ryan reynolds owner of mint mobile. we're big fands of pbs, so this message will be delivered documentary style. since america's founding, people have struggled with communication plans. they called the pony express too slow making ponies everywhere feel like *horse sound*, but times have changed. mint mobile offers no contract wireless plans unlimited talk and text, nationwide 5g coverage, and customers