As Global Temperatures Rise, Nigeria Faces a Cooling Crisis
With electricity scarce, Africa’s most populated country struggles to provide lifesaving cooling without worsening the very crisis causing the heat.
Signals
Dengue fever is — unfortunately — having a banner year. Can it be quelled?
Case counts are skyrocketing in countries like Brazil and Peru and the virus is popping up in new turf, from Florida to Iran. What's the cause? And what's the solution?