Emissions from shipping could grow by 250% by 2050 if no action is taken.Halving shipping's emissions by 2050 could require $1.4 trillion in investment.But the scale of this challenge could be big enough to spur decarbonization across other sectors, too. Climate change requires urgent action in all sectors of the economy - including maritime shipping, which carries close to 80% of global trade and accounts for 2-3% of global greenhouse gas emissi...