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Lightning is a natural electrical discharge created by imbalances between a cumulonimbus cloud and the ground or within itself.

Ocean Ramsey is a marine biologist, professional freediver and scuba instructor, marine and shark conservationist.

It's not easy to find an accurate high-definition world map, but we've got you covered. Explore our carefully curated atlas.

Earthquakes are the deadliest and most damaging natural disasters in the world. But why do they happen and what caused the planet to shake violently?

A seismic wave is an energy wave that travels through the Earth's layers.

Coronaviruses are a large group of viruses, consisting of a core of genetic material surrounded by an envelope of proteins spikes, which gives it the appearance of a crown.