Lava flowing across the main road into Grindavík, Iceland.
The next wearable health metric you'll obsess over may be your brain's actual level of focus.
The explosion was relatively small, but still triggered noticeable changes to the area.
The idea is intriguing, especially as climate change exacerbates the threat of extreme weather. But numerous hurdles stand in the way of implementation.
An atmospheric phenomenon called "omega block" has parked an oppressive heat dome over the continent.
New research suggests high-severity wildfires are overtaking California's forests and killing some of the world's oldest trees.
Photo: Marco Di Marco (AP) 
