Darwin's Theory of Evolution: Definition & Evidence - Live Science
2022年10月14日 · 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?
20 inventions that changed the world | Live Science
2023年7月19日 · 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 …
History of computers: A brief timeline | Live Science
2023年12月22日 · The history of computers goes back over 200 years. At first theorized by mathematicians and entrepreneurs, during the 19th century mechanical calculating machines …
Temperature: Fahrenheit, Celsius, Kelvin | Live Science
2021年3月22日 · Hot and cold are measured using a numeric scale called temperature. Temperature scales are how we communicate about the weather, measure safety and comfort …
Is Mount Everest really the tallest mountain on Earth?
2022年10月28日 · Researchers have measured Mount Everest many times over the past few decades, but the latest assessment, announced in November 2021, puts it at 29,031.69 feet …
The solar system: Facts about our cosmic neighborhood
2022年2月25日 · An image of a massive solar flare (or coronal mass ejection) erupting out of the sun in 2017. (Image credit: NASA) The sun is at the center of the solar system and is its …
What is photosynthesis? - Live Science
2024年6月11日 · Photosynthesis is the process plants, algae and some bacteria use to turn sunlight, carbon dioxide and water into sugar and oxygen.
Deforestation: Facts, causes & effects | Live Science
2023年4月28日 · 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 …
The four seasons of the year: spring, summer, autumn (fall) and …
2022年2月11日 · Seasons are periods of the year with distinct weather conditions and day lengths. Earth's four seasons are spring, summer, autumn (fall) and winter.
What's inside Earth? - Live Science
2023年10月9日 · The oceanic crust is mostly basalt rock, and it's denser than the continental crust, which is largely granite. So when an oceanic plate collides with a continental plate, the …