Hard Numbers: A Quarter of a Billion People Far From Home

29: Even before Brazilian president Jair Bolsonaro's response to fires raging in the Amazon fueled global scorn, his approval rating was tepid. It was 50 percent at the beginning of the year, dipping to 39 percent in February. Now it's just 29 percent.

57: Severe drought in Afghanistan over the past few years has led to a food crisis in the violence-plagued country. Some 57 percent of Afghans report having struggled to afford food in the past year, according to a Gallup poll. The proportion of those who said they are "struggling financially" was the highest on record last year.

400 billion: According to a study by the Center for Climate Integrity, the cost of building bulwarks against rising seas levels around the US by 2040 is projected to be $400 billion. That's almost as much as it took to build the original interstate highway system, which took decades to construct, and cost over $500 billion when accounting for inflation.

250,000,000: Out of a global population of 7.7 billion, a quarter billion people live outside the country of their birth. While most are migrants in search of better economic opportunities, one-tenth are refugees from crisis areas such as Syria, Venezuela and Myanmar.