“Who would have known that the mighty people of Yemen would challenge the empires of the world,” he added, referring to the Houthi attacks on international shipping in the Red Sea that have led to two nights of retaliatory strikes by the US and UK.

This does not sound like somebody interested in promoting peace.

It is explained in the link.

A hint, just after the title: “MIT engineers and collaborators developed a solar-powered device that avoids salt-clogging issues of other designs.”