Scientists observed and reported how vortex rings, swirling donut-shaped masses, move through water and reach air without ...

Air rings blown by dolphins swimming underwater and rings of smoke emitted by jet engines are just two examples of vortex rings. These doughnut-shaped structures and their mesmerizing movement have ...

Companies are using advanced technology to drill many miles underground to reach the hot rock below. Their quest is to make ...

"We're deeply grateful." Startup gets multimillion-dollar funding to launch innovative water-generating technology: 'A strong vote of confidence' first appeared on The Cool Down.