she spoke with hari sreenivasan from sao paulo, brazil, where she is based. >> sreenivasan: so, samanthau've been covering how food prices have been skycketing in brazil and latin america. is there any one central reason why this is happening? >> so, yeah, we' been doing a lot of stories on, in fact, the global rise in food prices, but that's really hit latin america hard, and it's heartbreaking to see that especially in places like brazil where i'm based. i mean, brazil, it just seems like we're finally coming out of the worst of the pandemic, which has had a horrific impact here. more than 600,000 people dead. and things are now meant to be better and now, as you say, food prices are rising and people can't afford to eat. millions of people can't afford to eat. and the reasons for that are very varied across the world. i mean, it kind of depends on which country, it depends on which food group as well. but i think i would lump it into, kind of, two main reasons. so, i think either because of the pandemic, the effects of the pandemic, but also climate change had-- is having a kind of ca

before the thanksgiving holiday, hari sreenivasan spoke with dr. r, pediatrician in chief at new york presbyterian hospital and chair of the department of pediatrics at weill cornell medical center. >> sreenivasan: dr. permar, how many children have had vaccinations now and what have we learned about the process? >> yeah, so it's exciting that the m.r.n.a. vaccines for covid have become available down to age five, the five- to 11-year-olds, only recently. of our adolescents, there have been over 15 million in the u.s. have been vaccinated. and in that five- to 11-year-old group that have only just started becoming vaccinated in the last two weeks, we know that almost two million at least have gotten their first dose. >> sreenivasan: and i think most parents, the kind of immediate concern that a lot of them have is, "have there been any adverse reactions? i'm kind of in the wait-and-see camp. should i, you know, wait for those news stories to come out?" what-- tell us, put this vaccine in context. >> yeah, so this is one of the most scrutinized vacci

hari. >> sreenivasan: at the u.n.n glasgow, one issue will dominate discussions: how to reduce the amount of carbon dioxide in the atmosphere to help slow global warming. one way is to cut emissions from the use of fossil fuels. but there ae also ways to reduce the c02 in the atmosphere called carbon capture, or carbon sequestration. trees do it naturally, and that's why deforestation has accelerated climate change and why scientists argue for rapid reforestation. newshour weekend special correspondent willem marx reports now on how the united kingdom is making a big investment in replanting its forests. this story is part of our ongoing series "peril & promise: the challenge of climate change." >> reporter: centuries of building towns and burning firewood has left the u.k. with far fewer forests than most other countries in europe. but this year, several massive effos are underway to help re- blanket britain with trees. through the work of civil servants, like jim lee, who drove us through his loc countryside in nort

i'm hari sreenivasan. thanks for watching. stay healthy, and have a good night.tioning sponsored by wnet captioned by media access group at wgbh access.wgbh.org >> pbs newshour weekend is made possible by: sue and edgar wachenheim iii. bernard and denise schwartz. the cheryl and philip milstein family. the anderson family fund. the estate of worthington mayo-smith. leonard and norma klorfine. the rosalind p. walter foundation. koo and patricia yuen, committed to bridging cultural differences in our communities. barbara hope zuckerberg. we try to live in the moment, to not miss what's right in front of us. at mutual of america, we believe taking care of tomorrow can help you make the most of today. mutual of america financial group, retirement services and investments. additional support has been provided by: consumer cellular. and by: and by the corporation for public broadcasting, a private corporation funded by the american people. and by contributions to your pbs station from viewers like you. thank you. you're watching pbs. -this is where most of the truck dr

. >> hari sreenivasan speaks to the team behind "writing with

. >> tom morello from rage against the machine talks to hari sreenivasan about social justice and makinghrougvoice memos.

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