By Daron AcemogluCAMBRIDGE — The increase of greenhouse-gas emissions (GHGs) in the atmosphere has caused average global surface temperatures to rise by almost 1°C over the past century.

By Mauricio CárdenasNEW YORK — Last year, according to BP’s Statistical Review of World Energy, Latin America produced 8.6 million barrels of oil per day (bpd), nearly 9 per cent of the world’s total oil output.

By Kandeh K. YumkellaFREETOWN, Sierra Leone — Each year, exposure to household air pollution (HAP) kills 4.3 million people, more than HIV/AIDS, malaria and tuberculosis combined.

By Mark RoeCAMBRIDGE — Back in August, the Business Roundtable, which comprises the chief executive officers of America’s largest companies, with combined annual revenues of more than $7 trillion, updated its long-standing statement regarding corporate purpose.

By Kemal DervişWASHINGTON, DC — The notion of an “international” civil service goes back a century, to the establishment of the League of Nations after World War I.

By Robert SkidelskyLONDON — In September, New York’s Metropolitan Opera announced that Plácido Domingo had withdrawn from all future engagements there, following allegations of sexual harassment made by several women, including a soprano who said he grabbed her bare breast.

By Sam RainsyPARIS — Nearly seven decades after Cambodia gained independence from France, its people are still struggling for the right to determine their future.

By Kristen R. Ghodsee, Mitchell A. Orenstein PHILADELPHIA — “No one will be worse off than before, but it will be much better for many,” German Chancellor Helmut Kohl assured East Germans after the fall of the Berlin Wall on November 9, 1989.

By Stephen S. RoachNEW HAVEN — Dealmakers always know when to cut their losses. And so it is with the self-proclaimed greatest dealmaker of them all: US President Donald Trump.