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A gamified HIV prevention program reduced sexually transmitted infections by 40 percent in America's most at-risk population - men, ages 18-29, who have sex with men.

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A new study from Northwestern University and the Chicago Botanic Garden has found that climate change may drive local extinction of mason bees in Arizona and other naturally warm climates.

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In a new study, Renee Engeln, author of “Beauty Sick” (HarperCollins, 2017), tested the effect of three specific writing exercises on college women’s body satisfaction, along with co-author Natalie G. Stern also of Northwestern.

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The first examples of covalent organic frameworks (COFs) were discovered in 2005, but quality has been poor and preparation methods uncontrolled. Now a Northwestern University research team is the first to produce high-quality versions of these materials, demonstrate their superior properties and control their growth. The team’s two-step process produces organic polymers with crystalline, two-dimensional structures. The precision of the material’s structure and the empty space its hexagonal pores provide will allow scientists to design new materials with desirable properties.

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• Chameleons change color by controlling the spacing among nanocrystals on their skin • Northwestern’s nanolaser changes color similarly — by controlling the spacing among metal nanoparticles • By stretching and releasing an elastic substrate, the nanoparticles move further apart or closer together to control color

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A lifestyle intervention could fully normalize these four unhealthy behaviors, which put people at risk of developing heart disease and common cancers, including breast, colon and prostate.

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Twenty laboratory mice are poised to play an important role in preparing humans to go to Mars. A Northwestern University-led study of the microbiome in space is one of five science investigations scheduled to launch Friday, June 29, on board the SpaceX Dragon and head for the International Space Station (ISS).

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Renowned chemistry professor and spouse were celebrated at a special ceremony

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In an effort to meet the needs of an increasingly diverse campus population, Northwestern University and its new food service provider, Compass Group, will introduce several initiatives this fall to be more inclusive in its dining options. All residential dining halls will offer meals that meet the needs of students with allergens and special diets, including halal and kosher foods, Compass Group said.

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The first randomized, controlled trial testing carbon dioxide gas injections (carboxytherapy) to reduce belly fat found the new technique eliminates fat around the stomach. However, the changes were modest and did not result in long-term fat reduction, according to the Northwestern Medicine study.

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Just beyond the northwest edge of the vast Greenland Ice Sheet, Northwestern University researchers have discovered lake mud that beat tough odds by surviving the last ice age. The mud, and remains of common flies nestled within it, record two interglacial periods in northwest Greenland. Although researchers have long known these two periods — the early Holocene and Last Interglacial — experienced warming in the Arctic due to changes in the Earth’s orbit, the mix of fly species preserved from these times shows that Greenland was even warmer than previously thought.