Earth Science

The magnetic North Pole, which shifts over time due to changes in Earth's core, has historically been located within the Canadian Arctic archipelago. This makes Canada a critical location for geomagnetic studies and navigation.

The lake's extremely high alkalinity and salt content, combined with its unique chemistry, calcifies and preserves animals that fall into its waters. This creates eerie, natural mummies along its shores, a stark reminder of its deadly environment.

Far from a solid island, this massive accumulation zone is primarily composed of tiny plastic fragments suspended throughout the water column, making it largely invisible to the naked eye from above. It represents a pervasive and ongoing environmental crisis.

A waterfall of rusty-red liquid flows from Taylor Glacier into Lake Bonney. The unusual color comes from iron oxides in an ancient, hypersaline lake trapped beneath the ice, devoid of light and oxygen for millions of years, hosting unique microbial life.

This extreme low was measured at Vostok Station in East Antarctica on July 21, 1983. The station's location on a high plateau, far from moderating ocean influences, combined with long winter nights and clear skies, creates optimal conditions for such record-breaking frigid temperatures.

Despite the extreme heat of Earth's core, reaching temperatures of approximately 5,200 Kelvin (about 9,392 °F or 5,200 °C), the planet's mantle and crust act as insulators, keeping the surface cool enough for life. The core's immense pressure also keeps its iron and nickel in a solid state.

About 335 million years ago, Earth's landmasses were joined in a giant continent. Over millions of years, plate tectonics caused Pangaea to break apart, slowly drifting to form the continents we know today.

Scientists estimate the temperature of Earth's solid iron-nickel inner core to be around 5,200 degrees Celsius (9,392 degrees Fahrenheit). This extreme heat is a remnant from the planet's formation and ongoing radioactive decay.

Studies suggest the solid inner core spins slightly faster than Earth's mantle and crust, gaining about 0.08 to 0.1 degrees of longitude annually. This differential rotation is influenced by the magnetic field generated in the liquid outer core.

This horseshoe-shaped zone of intense seismic activity and volcanic eruptions stretches around the Pacific Ocean basin. It is formed by the movement and collision of several tectonic plates, leading to frequent earthquakes and eruptions.