Top oil and gas companies jointly spent around 1 percent of their 2018 budgets on clean energy, but investments by Europe’s giants vastly outpaced their U.S. and Asian rivals, a study showed. Companies such as Royal Dutch Shell, Total and BP have in recent years accelerated spending on wind and solar power as well as battery technologies, seeking a larger role in global efforts to slash carbon emissions to battle global warming. Investors in recent years ratcheted up pressure on boards of fossil fuel companies including Exxon Mobil, the world’s largest publicly-traded oil company, to reduce emissions, spend more on ... (full story)