Oil giants are going to invest in more oil while also preparing for a greener future, says The Economist’s Vijay Vaitheeswaran.

Here’s what that might mean for investment in fossil fuels and clean energy.

Climate events like more intense hurricanes are spreading the byproduct of burning coal to water used for drinking and recreation.

The energy industry is emphasizing the controversial technique over traditional drilling, partly for its shorter timetable.

South Africa has seen a boom in coal exports. But critics say European countries shouldn’t keep feeding their coal habit.

Sustainable aircraft fuel is tricky — electric batteries and biofuels have big drawbacks. A startup is converting carbon dioxide into jet fuel.

Companies have to evaluate their prospects, then come up with a budget and manage crew and equipment logistics.

While coal is having a resurgence as a fuel source, the spike in its use may not last.

Russia supplies more of the EU’s oil and gas than it does coal.

We won’t stop using fossil fuels right away, but the transition to renewable energy could be tricky.