Hovering blue flames that flicker over bogs and marshes have inspired ghostly folktales for centuries. Known as “will-o’-the-wisp,” “jack-o’-lantern,” “corpse candle” and “ignis fatuus” (“foolish fire ...

They’ve been called “bubble chasers,” and “seep seekers,” though they sometimes call themselves “flare hunters.” They’re a small group of scientific specialists searching the world’s oceans for tiny ...

Methane is a potent greenhouse gas that can pack more than 25 times the global warming punch of carbon dioxide, and atmospheric methane emissions have been growing significantly since 2007. So it’s ...