and it's a huge concern right now of what might happen this year. >> sreenivasan: nicholas casey of theimes," thanks so much for joining us. >> thanks. >> sreenivasan: finally, in the french open, women's singles final today, top-seeded serena williams was upset by fourth-seed garbine rauza of spain. in the men's doubles final, americans bob and mike bryan were denied a 17th grand slam trophy. they lost to a spanish duoin three set. the brian brothers still have one more win than other teams in history. i'm hari sreenivasan, good night. captioning sponsored by wnet captioned by media access group at wgbh access.wgbh.org >> pbs newshour weekend is made possible by: lewis b. and louise hirschfeld cullman. bernard and irene schwartz. judy and josh weston. the cheryl and philip milstein family. the citi foundation. supporting innovation and enabling urban progress. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires. sue and edgar wachenheim, iii. corporate funding is provided by mutual of america-- designing customized individual and group

for more on this dire situation we turn to nicholas casey of the new york times, in caracas. thank you for joining us. nicholas, give me a sense about how long this collapse. it feels like a slow-motion collapse. how long has it been going on and what has caused it? >> it's been going on for a couple of years now. and it's been tied to the collapse in oil prices in venezuela. venezuela gets almost all of its revenue from oil. so when these prices started to collapse, the first thing you saw was that some of the foods started to disappear, not in huge quantities, but enough that there were lines in front of stores. the electricity started to disappear. there's even problems with water right now because the government doesn't have the money that it needs. now, what's happened with the food is that is there there has been so much which has gone at this point, that people are starting to get hungry. and last week and the week before, we saw a wave of lootings of stores, people basically left these lines that they were gathered in and started to go directly into the stores, break d