A month-long slide in oil and sudden surge in natural gas price is impacting global stocks, the bond market, hedge funds, and consumers. Here is what is causing the moves and what might happen next…

In natural gas, which is widely used to heat homes in northern U.S. and Canada, a change in weather forecasts over past few days has pushed futures to $4.40 per BTU, which is a 35% surge in just one week, and settled at its highest level since February 2014.