Natural gas futures soared to $4 per million British thermal units in the U.S. for the first time since December 2018 as summer heat intensified concerns about tight supplies later this year. Gas for August delivery jumped to as much as $4.001 per mmbtu on the New York Mercantile Exchange and traded at $3.991 at 1:22 p.m. The premium for March 2022 gas over April futures -- essentially a bet on how undersupplied the market will be at the end of next winter -- reached 63.6 cents, the highest on record. Prices for the fuel are soaring across the globe as scorching weather stokes demand for electricity to run air ... (full story)