Abdoul Salam Nizeyimana, a 27-year-old Rwandan, survived the slaughter of his entire Tutsi family at the hands of Hutu fighters. 2 decades-plus since the genocide, Rwanda’s economy has grown 7-fold, and the country is alive with youthful ambition.

Hearing aids are bulky, expensive and available only through medical professionals which means 80% of Americans who need them don’t have them—a number that hasn’t changed in decades according to Frank Lin, director of the Cochlear Center for Hearing and Public Health at the…

Is it time to say goodbye to handsets and literally lodge your virtual assistant inside your ear? The future of smartphones may be “hearable.” Silicon Valley giants Amazon, Apple and Google are angling to make our mobile technology entirely voice-commandable. But there’s…

A federal judge barred downloadable DIY firearms Tuesday just hours before they were due to run online. The restraining order temporarily undercuts plans for Texas non-profit Defense Distributed to post blueprints for 3D printed guns, including designs akin to AR-15s. The…

Tankfuls of leeches are a hospital standby, used occasionally to help ease venous congestion after certain surgeries. The advent of germ theory had pushed leeches out of medical vogue for a time, until surgeons enlisted ciprofloxacin to stave off Aeromonas bacteria harbored…

A drug targeting recurring malaria crossed another hurdle, winning approval from the FDA (which did, however, underscore important side effects).   Tafenoquine can flush the malaria-causing plasmodium vivax parasite out of the liver, where it hides and reawakens. Relapsing…

When Reagan signed the Undetectable Firearms Act of 1988, plastic guns were theoretical, Democrat Steve Israel writes. When Congress renewed it in 2013, plastic guns could be downloaded and produced using a 3-D printer. The NRA blocked any modernization—such as requiring a…

With the help of scientists, sustainability can be drawn into the blueprints of our cities, which now accommodate over half of the world’s population. From smart waste disposal to driverless cars to tree cover, this special report outlines the many ways science breeds…

Many medical devices donated to low-income countries sit unused—like an X-ray machine in Uganda that broke down, with no trained technician to fix it. There is also often a mismatch between the types of equipment that are needed and what is received.

Over a billion people around the world with inadequate cooling options face immediate threats to their health, safety, and productivity as the world warms, according to a new report from Sustainable Energy for All.