Lava on a snowy roadside, creating a stark contrast between the chilly landscape and the blistering-hot molten rock.
The wearable best suited to actually carry a conversational AI assistant everywhere has been sitting in your ears for a decade.
A new report describes this year's El Niño as a "postcard from the future," delivering unusually warm temperatures that will become normal in just a few decades.
One Earth day rarely adds up to exactly 24 hours. Scientists found one (of many) reasons why.
A planetary "health check" shows that many of Earth's critical systems have entered dangerous territory.
A new study narrows the timeline for the emergence of life on Earth.
Forecasters are eyeing a potentially strong nor'easter that could hit later this week.
Photo: Marco Di Marco (AP) 
