Surgeons in Venezuela are being forced to cancel procedures because there’s no water available to scrub in. The malfunctioning water system is the latest in a string of health system failures—basic antibiotics and vaccines are also lacking—as the country’s economic crisis…

Since the 2014 Ebola crisis in Sierra Leone, donated ambulances have been sitting idle in a country with no emergency transport budget. But in 2019 they’ll start their engines again under the new National Emergency Medical Service (NEMS), which will take on 170 donated…

Indigenous peoples leave the smallest carbon footprint, yet they disproportionately face the consequences of climate change—including forced migration.  

Researchers have posited another benefit of reducing obesity rates: limiting the toll of viral infectious diseases. According to a study of Nicaraguan households spanning 3 flu seasons, the influenza A virus sheds longer in obese people because of chronic inflammation…

The shift to a sedentary, urbanized lifestyle that favors processed foods over a traditional diet is building health risks among indigenous communities.

The tide of population is turning. Across the globe, countries’ populations are shrinking and aging, and most are ill-prepared not prepared for a “childless, elderly future,” writes Steve LeVine. Population growth in Africa alone will keep the global population soaring…

Aiming to understand how demographic variations impacted the efficacy of natural selection, researchers compared 2 populations that lived through the hugely significant Neolithic transition to agriculture. Demographic shifts help dictate the number and severity of…

After years of policies limiting births of girls and favoring sons, China and India face decades of work addressing the effects of their male-heavy generations. In those 2 countries, men outnumber women by 70 million—distorting the economy and paralleling an uptick in…

The world holds an estimated 7.5 billion+ people today; by 2100, that number is expected to rise to 11 billion, with the fastest growth in Africa and Asia. In June, the UN will publish new projections.

Amid all the woes in the world, Bill and Melinda Gates hang on to hope. For their annual letter, they explain why—and tackle the 10 hardest questions they get.Highlights:#1: Why don’t you give more in the US? Melinda: “We don’t compare different people’s…