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They're the hallmark of vaping — the massive clouds that sometimes come in different shapes.But how does a little e-liquid become those clouds?We're going inside an e-cigarette to find out.The devices usually have four main parts: a reservoir that holds e-liquid, a battery, a heating element and a mouthpiece.The first step is to add e-liquid to the reservoir or to attach a pre-made cartridge.The liquid is made of nicotine, flavoring, vegetable glycerin and propylene glycol. You’ll find propylene glycol in things like inhalers and fog machines. The U.S. Food and Drug Administration says it’s all safe.Next, the battery warms up the heating element and that vaporizes the e-liquid. The vapor travels through the e-cigarette, out the mouthpiece and into the lungs.When exhaled, the vapor vanishes into the air fairly quickly.The heat is low enough that it doesn't combust — or burn — the liquid.Supporters say vaporizing creates fewer dangerous compounds than combustion.The American Cancer Society says vapor can still contain harmful chemicals or substances, like volatile organic compounds, or VOCs.They cause inflammation and can make the kidneys, liver or nervous system fail.According to the American Cancer Society, vapor can also contain harmful flavoring chemicals and formaldehyde. 1312

The US Coast Guard is helping with the search for a missing Air Force airman who fell out of a plane during a jump training mission, Coast Guard Mobile Sector spokesman Juston Lee told CNN.The missing staff sergeant deployed his parachute and fell about 1,500 feet into the Gulf of Mexico, he said. His name and age have not been released.The crew aboard the C-130 plane said the airman hit the water and was treading water, but when they turned back around to find him, they couldn't see him, Lee said.The crew is from Hurlburt Field in Okaloosa County, Florida.Multiple teams are continuing the search for the man. 628

Three people were killed and nine injured when a vehicle was struck Tuesday by two Long Island Rail Road trains going in opposite directions, according to MTA Long Island Rail Road president Phillip Eng.The vehicle reportedly drove around railroad crossing gates in Westbury, New York, Eng said. The three dead were in the vehicle, Eng said, and the injured included seven train passengers, a conductor, and an engineer.The injured were transported to area hospitals with minor injuries, Eng said."This is a ... very tragic cautionary tale that you just don't try to beat the train. It's not, it's not going to work," Nassau County Executive Laura Curran said.The first strike came from an eastbound train leaving the Westbury station and carrying about 100 people, Eng said.Then a westbound train, traveling at a higher speed and carrying about 800 people, struck the vehicle. According to Eng, the front two train cars of that train derailed and struck the platform at Westbury station.About 200 feet of track has been damaged, along with the third rail, and the Westbury platform, Eng said."We're gonna work through the night and we're gonna work to restore service as soon as possible," Eng said, adding that he expected morning service to be impacted. 1268

Treasury Sec. Steve Mnuchin said Friday that the IRS is moving the tax filing deadline from April 15 to July 15.Mnuchin made the announcement on Twitter, saying the move came at the direction of President Donald Trump."All taxpayers and businesses will have this additional time to file and make payments without interest or penalties," Mnuchin said. 362

The USPS is honoring military dogs with its newest set of forever stamps.The four new stamp designs each features a different dog breed that represents the most common military dogs — a German shepherd, a labrador retriever, a Belgian malinois and a Dutch shepherd.According to a press release from the USPS, dozen of dog breeds have been used by all branches of the military. Dogs have served and aided soldiers in all American wars dating back to World War I.The dogs were hand-sketched by artists at DKNG studios before being colorized in Adobe Illustrator. The design of the stamps is credited to USPS Art Director Greg Breeding.The stamps went on sale Thursday. A 20-stamp book costs and can be used forever. 729

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