Big Oil spent 1 percent on green energy in 2018

LONDON (Reuters) - 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..