Cooling green roofs seemed like an impossible dream for Brazil's favelas. Not true! Temps soar in Brazil's summer (from December to March). Low-income favelas would benefit from green roofs but there are two problems: Cost. And a typical design that's too heavy for a favela home. Jill Langlois
U.S. puts virtually all foreign aid on 90-day hold, issues 'stop-work' order Following Trump's Monday freeze on foreign aid, a subsequent memo calls for for a stop-work order for current grants and contracts. Fatma Tanis
What will China do if U.S. leaves the WHO Critics of Trump's order to pull out of the WHO say it makes room for China to grow in its influence. But Trump says he's leaving the WHO partly because of China's influence. Policy analysts weigh in. Gabrielle Emanuel
Assessing Trump's claim that U.S. pays 'unfair' share of dues to WHO While signing the order to end U.S. membership in the World Health Organization, the President spoke of the disparity between contributions from the U.S. and China. Here's how WHO funding works. Ari Daniel
"TaxTheSuperRich" is a protester motto at the Davos forum. Would that end inequality? The World Economic Forum in Davos, Switzerland, is underway this week — and there are calls for taxing the extremely rich to address global inequality. Kamala Thiagarajan
Trump declares U.S. will withdraw from the World Health Organization The newly inaugurated president announced his intention to terminate U.S. membership in the U.N.'s global health agency. Gabrielle Emanuel
4 key global health decisions expected from Trump Four key decisions await Trump: reinstating the Mexico City Policy; withdrawing from WHO, abandoning the Pandemic Prevention Treaty and de-authorizing PEPFAR, the HIV prevention program. Gabrielle Emanuel
How soda is changing the world A new study establishes that soda consumption is doing ever more damage to health — with rising rates of diabetes in regions where soda-drinking is on the rise, like sub-Saharan Africa. Rachel Carlson
Why are so many indigenous Panamanians contracting HIV — and dying of AIDS? The government provides HIV medicines free of charge. Yet in one indigenous territory, cases and deaths are increasing at an alarming rate. Adam Williams
They were going to be doctors. Instead, they had to dodge bombs and flee war The war in Sudan has taken a toll on the medical profession. Health workers have fled the country, and those seeking to complete their medical education are finding it an increasingly impossible task. Maria Isabel Barros Guinle
