There's a chance that the recent rebound in oil prices is only temporary. Several trends are conspiring to force oil prices down for a second time.
Some OPEC members, concerned about the economic impact of low oil prices, say the cartel may have to call an emergency meeting sooner rather than later. But Saudi Arabia, the most influential member, is likely to veto such an idea.
An oil refinery strike continues to spread across California, Texas, and elsewhere across the US. It is now the largest US oil refinery strike in nearly 35 years.
Due to a combination of union strikes, an oil refinery explosion and the winter season, gas prices are rising again.
Probably neither. The most likely scenario is that US crude oil prices will bounce around current levels for a while before gradually recovering to the $60-$70 per barrel level, Tillier writes.
Opposition to hydraulic fracturing has been very strong in Germany, but the government is flirting with the idea of allowing oil and gas drillers to begin fracking as an answer to energy security issues.
New York and California are working to position the electric system to succeed in an environment of changing technology costs and capabilities, Crosby and Cross-Call write.
Analyzing the short-term trajectory of oil prices is certainly important, Cunningham writes, but it obscures the fact that over the long-term, oil exploration companies may struggle to bring new sources of supply online.
Monday's derailment in West Virginia is the latest in a string of crude oil train mishaps that have resulted in explosions and sometimes fatalities. US shipments of crude by rail have jumped more than 4,000 percent since 2008, fueling calls for tighter safety rules.
Oil supermajor BP says global carbon emissions will continue to rise well above what most scientists regard as safe levels in the years to come. While there's no silver-bullet solution to the threat of climate change, the company endorses one specific policy as a way to guide efforts.