By speeding the demise of coal, which is far dirtier, cheap natural gas has done as much to reduce carbon emissions as any government regulation. But the returns are already diminishing: Natural gas also emits carbon dioxide, and this year for the first time the amount will exceed that of coal in the U.S. The most efficient way to …

  On Saturday, donors to the Global Fund pledged nearly $13billion to eradicate the three deadly maladies — AIDS, tuberculosis and malaria — by 2030. The money is expected to help save 8 million lives. The Global Fund demonstrates that collective effort and global commitment can do wonders. Since 2002, the Fund has spent $30 billion to fight the three …

  Bloomberg Saudi Arabian stocks declined the most in the Gulf as the kingdom’s equities traded for the first time in a week, tracking a selloff across developing nations as investors weigh the chances of a U.S. interest rate increase this year. The Tadawul All Share Index dropped 1.9 percent on Sunday as it reopened after a week-long religious holiday. …