Via Truck and Barter comes this from the UK:
Wholesale gas prices for immediate delivery turned negative on Tuesday as supplies surged in from the new Langeled pipeline from Norway.
Britain's gas storage capacity is 96% full so firms need to offload supplies.
It is rare, but prices can be negative.
It's rare for prices on goods to be negative ... prices on "bads" often are.
And "bads" are typically bad because disposal is costly.