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The total volume of water on Earth is estimated at 1.386 billion km 3 (333 million cubic miles), with 97.5% being salt water and 2.5% being freshwater. Of the freshwater, only 0.3% is in liquid form on the surface. [ 2][ 3][ 4] Because the oceans that cover roughly 70.8% of the area of Earth reflect blue light, Earth appears blue from space ...
Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.
Planetary health is a multi- and transdisciplinary research paradigm, a new science for exceptional action, [1] and a global movement. Planetary health refers to "the health of human civilization and the state of the natural systems on which it depends". In 2015, the Rockefeller Foundation–Lancet Commission on Planetary Health launched the ...
The ocean is a major driver of Earth's water cycle. Ocean water represents the largest body of water within the global water cycle (oceans contain 97% of Earth's water ). Evaporation from the ocean moves water into the atmosphere to later rain back down onto land and the ocean. [ 68]
May 24, 2024 at 5:13 PM. NASA/JPL-Caltech/R. Hurt. A potentially habitable exoplanet that is roughly similar in size to Earth has been found in a system located 40 light-years away, according to a ...
At a global scale, footprint assessments show how big humanity's demand is compared to what Earth can renew. Global Footprint Network estimates that, as of 2022, humanity has been using natural capital 71% faster than Earth can renew it, which they describe as meaning humanity's ecological footprint corresponds to 1.71 planet Earths.
The planetary health diet, also called a planetary diet or planetarian diet, is a flexitarian diet created by the EAT-Lancet commission [1] [2] as part of a report released in The Lancet on 16 January 2019. [3] The aim of the report and the diet it developed is to create dietary paradigms that have the following aims: [2]
The world's population is over 8 billion [39] and Earth's total surface area (including land and water) is 510 million square kilometres (197 million square miles). [40] Therefore, the worldwide human population density is 8 billion ÷ 510 million km 2 (197 million sq mi) = 15.7 people/km 2 (41 people/sq mi).