A fork of lightning is seen falling on the capital, with high-rise buildings in Ikebukuro visible on the right, from Bunkyo Ward, Tokyo, in 2018. (Mainichi/Kimitaka Takeichi) With frequent spells of ...

Thunder is one of nature’s most dramatic sounds, accompanying brilliant flashes of lightning during a storm. But what causes this rumbling roar in the sky? To understand thunder, we must first explore ...