STOCKHOLM (AP) — Three scientists won the Nobel Prize in chemistry Wednesday for their development of new molecular structures that can trap vast quantities of gas inside, laying the groundwork to potentially suck greenhouse gases out of the atmosphere or harvest moisture from desert environments.The chairperson of the committee that made the award compared the structures called metal-organic frameworks to the seemingly bottomless magical handbag carried by Hermione Granger in the “Harry Potter” series. Another example might be Mary Poppins’ enchanted carpet bag. These containers look small from the outside but are able to hold surprisingly large quantities within.The committee...