We start this Uesday edition of CNN Student News with new developments in 2 stories we've told you about recently.

First, the nation of Turkey. Yesterday we reported on protest there. The largest demonstration against Turkey's government in years. Yesterday they were still going. This started in Istanbul. But the fighting between protesters and police forces has spreaded to other cities, like the capital, Ankara.

The big focus of these protests is Turkey's Prime Minister, Recep Tayyip Erdogan, has run the country's government for 10 years. A local jounalist described him as the most powerful and popular politican Turkey has seen in generations. But some Turks disagree with Erdogan's controlling leadership style. The journalist said he thinks people are protesting because they wanna their voives heard.

For now, the protesters show no signs of backing down, and Prime Minister Erdogan shows no signs of giving into their demands.

The other story following up on is about the virus that first showed up in the Middle East, it's spreaded to Italy. It's called the Middle East Respiratory Symtom Corona Virus, or MERS-CoV for short.

The general director of the World Health Organization says it's a threat to the entire world. So far, 53 known infections have been reported. But all those 53 cases, the patients in 30 of them have died. Over the weekend, 3 new cases were reported in Italy. It's the first time the virus has showed up in that country. Health officials said all 3 patients were in stable conditon, one thing they had in common: they had either travelled to the Middle East recenlty or been contacted with someone who had. In fact, that's been the case for all of the reported cases of MERS-CoV so far. That's one of a few things the health officials do know about this virus.

How it spread is still a mystery. In order to prevent the infection, scientists need as much information as they can, and the World Health Organization is asking the entire world to pull its resources together to study this virus.

--Just the FactsCystic fibrosis is a disease that can infect a person's lungs and digestive system, symtoms can appear in new born babies or may not show up until adulthood.

Cystic fibrosis is a life-threatening, it can be treated but there is no cure.

Sarah Murnaghan is diagnosed with cystic fibrosis when she was a baby. Now Sarah was 10 and her hope is that she'll get a new set of lungs. That'll have to come from a organ donor. You might have seen the notice about the orgon donaiton in the DMV. People can sign up to be an organ donor when they renew or get their licence. Some organs can be donated when you're alive, others like lungs are donated after the donor has died.

Everyday around 80 Amerians get a life-saving organ transplant, and everyday nearly 20 Americans died while waiting for an organ donation. Right now, there are 1,700 people on the waiting list for lungs. Sarah is at the top of list for pediatric lungs. Adult lungs are a lot more available, but getting those can be challenging for different reasons. Susan Candiotti explains why in this report on Sarah.