In this image taken from video, James Holmes (upper far left) listens to defense attorney Daniel King give closing arguments during Holmes' trial in Centennial, Colo., on Tuesday. Holmes was found guilty Thursday of first-degree murder in the deaths of 12 people at a Colorado theater. Colorado Judicial Department /AP hide caption

itoggle caption Colorado Judicial Department /AP

Using chemicals to control bugs or mold is common among commercial cannabis growers. But with no federal oversight, experts are concerned growers may be using dangerous pesticides. Ted S. Warren/AP hide caption

itoggle caption Ted S. Warren/AP

An Access Health CT location in New Britain, Conn. Courtesy of Access Health CT hide caption

itoggle caption Courtesy of Access Health CT

Rod-shaped specimens of Yersinia pestis, the bacterial cause of plague, find a happy home here in the foregut of a flea. Fleas can transmit the infection to animals and people, who can get pneumonic plague and transmit the infection through a cough or kiss. Science Source hide caption

itoggle caption Science Source

A drone built by Agribotix, a Boulder startup, flies over a farm in Weld County, Colo. The drone has a camera that snaps a high-resolution photo every two seconds. From there, Agribotix stitches the images together, helping the farmer see what's happening in a field. Luke Runyon/Harvest Public Media/KUNC hide caption

itoggle caption Luke Runyon/Harvest Public Media/KUNC

An interauterine device provides long-term birth control. iStockphoto hide caption

itoggle caption iStockphoto

Colorado educators take part in a concealed carry course in Englewood, Colo., on Nov. 8. The course is open to all state school employees. Participants who complete the training are eligible to apply for a permit to carry a handgun. MATTHEW STAVER/Landov hide caption

itoggle caption MATTHEW STAVER/Landov

Deuel County Sheriff Adam Hayward shows off a container of confiscated marijuana in Chappell, Neb., in July. Nikki Kahn/The Washington Post/Getty Images hide caption

itoggle caption Nikki Kahn/The Washington Post/Getty Images

Chapel of the Interlude includes a tiny sanctuary (left) and a fellowship hall (right) for gatherings. Both were severely damaged by 2013 floods in Colorado. Grace Hood/KUNC hide caption

itoggle caption Grace Hood/KUNC

Officials in Aspen have put out a brochure on how to use marijuana safely and legally. Marci Krivonen hide caption

itoggle caption Marci Krivonen

Nebraska and Oklahoma say Colorado's marijuana law is unconstitutional, in a challenge to the law in the Supreme Court. Earlier this month, visitors from Texas smell marijuana at the Breckenridge Cannabis Club. Brennan Linsley/AP hide caption

itoggle caption Brennan Linsley/AP

Brooke Gehring, CEO of Patients Choice and Live Green Cannabis, stands in one of her company's grow houses in Denver. Kirk Siegler/NPR hide caption

itoggle caption Kirk Siegler/NPR

Abortion-rights supporters outside the Supreme Court in January for the annual March for Life. This week North Dakota and Colorado struck down ballot measures restricting abortion, while Tennessee passed an initiative that may result in restricted rights. Alex Wong/Getty Images hide caption

itoggle caption Alex Wong/Getty Images

NPR knocked on doors throughout Colorado to find out how individual voters were responding to Democratic and Republican appeals in the lead up to Election Day. Molly Messick/NPR hide caption

itoggle caption Molly Messick/NPR

Students line a busy intersection and overpass in the Denver suburb of Littleton, Colo., on Sept. 25, protesting a Jefferson County School Board proposal to emphasize patriotism and downplay civil unrest in the teaching of U.S. history. Brennan Linsley/AP hide caption

itoggle caption Brennan Linsley/AP

Chief Brita Horn of the Rock Creek Volunteer Fire Department in Colorado says the department is "always short-handed." Bente Birkeland/KRCC hide caption

itoggle caption Bente Birkeland/KRCC

This human-scale lab rat cage is parked near a skate park in Denver, Colo., to make a point about the lack of science on marijuana. Richard Feldman Studio/Sukle Advertising and Design hide caption

itoggle caption Richard Feldman Studio/Sukle Advertising and Design

The Maiden Blush, Chenango Strawberry and Duchess of Oldenburg are heirloom apples found in old orchards across Colorado, which was once a major apple-producing state. Adalyn Schuenemeyer /Montezuma Orchard Restoration Project hide caption

itoggle caption Adalyn Schuenemeyer /Montezuma Orchard Restoration Project