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Organic farm, Alamar. Melanie Lukesh Reed/Flickr

Cuba’s sustainable agriculture at risk in U.S. thaw

Cuban farming is a model of agroecology – growing food without heavy use of fossil fuel or chemicals. But closer relations with the U.S. could push Cuba back toward large-scale industrial farming.
In 2015, gas prices fell below $2 per gallon in Moscow Mills, Missouri. The trend of low gas prices across the United States delay a signature Obama proposal to reduce emissions from cars and trucks. Whitney Curtis/Reuters

Cheap gas could delay America’s efficiency targets for cars and trucks

Faced with stringent fuel economy standards but cheap gas, automakers may seek to delay CAFE rules. What’s the best way to reevaluate these emissions-cutting rules?
What’s the fuss about? Steve Rhodes

The Common Core explained

Polls indicate that a large percentage of Americans know very little about Common Core, the standards for teaching math and English language arts. Here are some Common Core facts.
A nurse treats Johnny at Vancouver’s Crosstown Clinic before he self-injects his medication. © Aaron Goodman

Humanizing the heroin epidemic: a photo essay

Hoping to avoid the pitfalls and tropes of drug genre photography, documentary photographer Aaron Goodman spent a year following three addicts enrolled in a heroin-assisted treatment program.
Shattered windows at Brussels international airport. EPA/Laurent Dubrule

How radicalization happens and who is at risk

Scholars specializing in extremism are beginning to unravel how people – including a higher number of Americans than one might expect – become radicalized to embrace political violence.
A quantum dot: A high-resolution transmission electron micrograph of cadmium telluride nanoparticles. (The scale bar in the lower right is 2 nanometers long, or two millionths of a millimeter.) Nagpal Group, University of Colorado

Fighting superbugs with nanotechnology and light

Quantum dots - minuscule semiconductor particles with specific light-absorption properties - can kill drug-resistant superbugs without harming the surrounding healthy tissue.