'Unprecedented' Japan heatwave kills 65 in one week

An "unprecedented" heatwave in Japan has killed at least 65 people in one week, government officials said Tuesday, with the weather agency now classifying the record-breaking weather as a "natural disaster."

Scientists capture sounds of volcanic thunder

Researchers report in a new study that they've documented rumblings of volcanic thunder for the first time, a feat considered nearly impossible by many volcanologists.

Ship exhaust makes oceanic thunderstorms more intense

Thunderstorms directly above two of the world's busiest shipping lanes are significantly more powerful than storms in areas of the ocean where ships don't travel, according to new research.

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