States of matter: Definition and phases of change | Live Science
Oct 20, 2022 · The four fundamental states of matter are solid, liquid, gas and plasma, but there others, such as Bose-Einstein condensates and time crystals, that are man-made.
Deforestation: Facts, causes & effects | Live Science
Apr 28, 2023 · Why do people destroy forests? Often, deforestation occurs when people cut or clear forested area to make way for agriculture or grazing. The Union of Concerned Scientists (UCS) reports that just ...
Science and the scientific method: Definitions and examples
Jan 17, 2022 · Science is a systematic and logical approach to discovering how things in the universe work. Scientists use the scientific method to make observations, form hypotheses and gather evidence in an ...
Darwin's Theory of Evolution: Definition & Evidence - Live Science
Oct 14, 2022 · Charles Darwin's theory of evolution and natural selection isn't an idea with holes. It's one of the most solid theories in science. But what exactly is it?
The nervous system: Facts, function and diseases | Live Science
Mar 15, 2023 · A synapse gives a command to the cell and the entire communication process typically takes only a fraction of a millisecond. Signals travel along an alpha motor neuron in the spinal cord 268 mph ...
20 inventions that changed the world | Live Science
Jul 19, 2023 · Wheels were invented circa 3,500 B.C., and rapidly spread across the Eastern Hemisphere. (Image credit: James Steidl via Shutterstock) Before the invention of the wheel in 3500 B.C., humans were ...
What is photosynthesis? - Live Science
Jun 11, 2024 · Photosynthesis is the process plants, algae and some bacteria use to turn sunlight, carbon dioxide and water into sugar and oxygen.
The 12 biggest volcanic eruptions in recorded history
Jun 10, 2023 · There haven't been any VEI-8 volcanoes in the last 10,000 years, but human history has seen some powerful and devastating eruptions. Because it's extremely difficult for scientists to be able to ...
What is an atom? Facts about the building blocks of the universe
Dec 15, 2021 · Protons and neutrons have approximately the same mass. However, one proton is about 1,835 times more massive than an electron. Atoms always have an equal number of protons and electrons, and the ...
Why Does the Earth Rotate? - Live Science
Aug 26, 2018 · Every day, the Earth spins once around its axis, making sunrises and sunsets a daily feature of life on the planet. It has done so since it formed 4.6 billion years ago, and it will continue to do ...