Off the coast of Yemen, there's an old oil supertanker that has been used as a storage facility and loading bay for crude oil. It's still hanging out there, slowly decaying. Or quickly decaying, these days, since maintenance has been called off because of the war.
Which means that the tanker, with four times the amount of oil that was spilled during the Exxon Valdez disaster, is a catastrophy scheduled to happen any old day now.
There's a plan by the UNO to pump off the oil from the tanker, bringing it to a safer storage place, but they lack the funds to start work on the rescue mission. They lack a few millions, actually - and they're getting desperate enough to have started a crowdfunding, back in June. Up to today, though, there's not enough money been raised for this.
If you can spare some money, you can donate for this cause, either directly at the UNO website or via SumOfUs (German site here, there's no way I could find to link you to the English version.) You can also help by spreading word about this issue, and the UNO crowdfunding.