newsho weekend's ivette feliciano reported this story in august. this segment is part of our ongoing series, "peril & promise: tcl challenge of ate change." >> reporter: at northern california's monterey bay aquarium, scientists are conducting an experiment in time travel. >> we put it in one of those little vials and send it off. >> reporter: they're part of ean memorywn as the la >> so we can sort of go back in time from zero to the very end here. >> reporter: its mission: to paint a pictureaof what the looked like 200 years ago. >> imagine opening up a book at the last chapter and trying to understand what the story's about. we're kind of doing that right now with the ocean. >> reporter: science director kyle van houtan heads the project. >> we've studied the land. we live on land. and we've studied the land for centuries. we know quite a bimiabout the dy of how things work in forests and deserts and grasslands. we know a bit less about the ocean. >> reporter: studies on the ocean's environmental health iely go back a few decades, so ists often

newshour weekend's yvette feliciano reports from the capital city of port au prince on one of that country's biggest cultural events, which attracts top musicians from around the globe. >> ♪ life's greatra life's ♪ future's all planned ♪ no more clouds in the sky ♪ how i'm riding i'm riding hig ♪ >> reporer: on a warm winter evening in haiti, ja singer cecile mclorin salvant performs before a live audience at e 13th annual port au prince international jazz festival, or pop jazz. >> ♪ somewhere there must be a place ♪ where two heartbeats can uch where lovers can meet in the ♪ daylight and find it's enough. ♪ >> rorter: salvant, who won her third grammy for best jazz vocal album in february, is american but also has family in haiti. >> haiti is a strange, strange land for me. it is extremely familiar on the one hand, probably because of my ancestry, and yet i'm a total alien here. i'm a total tourist. merci. ( cheers and applause ) >> reporter: performing at pop jazz gives salvant the opportunity to connect with her haitian roots in different ways, like visiting with students in the haitian e

special recognition goes to captain feliciano and captain hart and by extension the entire department who has worked tirelessly to help them in their time of need. the family would like to thank supervisor shamann walton and the president of the board norman yee for bringing attention to this case. please try tried and true programs in chinatown and visitacion valley. the family wants this tragic incident to be an opportunity to address community unity and safety both in the immediate and long-term. this has been a trying time for the family as the beloved mother and grandmother remains in the hospital. she's making slightly improvements daily, and out of the intensive care unit. deep gratitude for all the medical personnel. the family continues to be moved by the outpouring of support for the family and well wishes for grandma huang. thank you. >> thank you. >> i believe i forgot to welcome sergeant ware. good to have some fresh blood -- and i've always appreciated sergeant kilshaw, as well. i wanted to take another crack at how we assign too many tasks and too many duties to law enf