This is What's Trending Today.A magnitude 6.2 earthquake struck central Italy on Wednesday.The U.S. Geological Survey says the center of the earthquakewas near the town of Norcia.Amatrice and Accumoli were hit especially hard.The mayor of Amatrice said"three-quarters of the town is not there anymore."Hundreds of people died and more were injured in the quake.One woman in Amatrice said"it was one of the most beautiful towns of Italy,and now there's nothing left."Many people and news organizationsposted photos on Facebook and Twittercomparing how the towns looked before and after the earthquake.CNN used a computer animation called a GIFto show how Amatrice changed from one day to the next.The town's clock tower was the only building still standing.One person wrote: "Wow! Have mercy, Lord!"USA Today used both aerial photos and photos from the groundto make a slideshow of before and after images.Some of the images came from Google Maps' street view.One person wrote: "my heart goes out to the people."Rescue efforts are continuing in Italy.Many were excited to hear the news of a 10-year-old girlbeing pulled from the rubble after 17 hours."May they find more survivors," wrote Rose Horowitz.Reacting to the news on Facebook, Randy Bettiswondered if "Mother Nature could give us a little break,"after the earthquake in Italyand floods in the U.S. state of Louisiana.And that's What's Trending Today.