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25 articles in science · page 1 of 2
Water exists as solid ice, liquid water, and water vapor gas depending on temperature.
The Sun is a giant star that provides light and heat energy essential for life on Earth.
Air is a mixture of gases, mainly nitrogen and oxygen, that surrounds the Earth.
Plants need sunlight, water, and nutrients from soil to grow and produce food through photosynthesis.
Gravity is the force that pulls objects toward the Earth and keeps planets in orbit around the Sun.
Rain forms when water evaporates, rises as clouds, and falls back to Earth as precipitation.
The human skeleton has 206 bones that support the body, protect organs, and allow movement.
Sound travels as vibrations through air and other materials, reaching our ears as waves.
Butterflies undergo complete metamorphosis through four stages: egg, larva, pupa, and adult.
All living organisms are made of cells, which carry out the chemical processes that sustain life.
Electricity and magnetism are two aspects of electromagnetism, unified by Maxwell's equations in the 19th century.
DNA is a double-helix molecule that encodes genetic instructions passed from parents to offspring.
Chemical reactions rearrange atoms to form new substances, releasing or absorbing energy in the process.
Earthquakes occur when tectonic plates suddenly slip along fault lines, releasing stored elastic energy.
Rainbows form when sunlight refracts and reflects inside water droplets, separating white light into its spectrum.
Stars are born in nebulae, live for billions of years fusing hydrogen, then die as white dwarfs or supernovae.
The immune system defends the body against pathogens using physical barriers, innate responses, and adaptive immunity.
Quantum mechanics reveals that particles like electrons exhibit both wave-like and particle-like properties depending on how they are observed.
Einstein's general relativity describes gravity not as a force but as the curvature of spacetime caused by mass and energy.
CRISPR-Cas9 allows scientists to precisely cut and edit DNA sequences, opening new frontiers in medicine and agriculture.
Greenhouse gas emissions from human activity are raising global average temperatures, disrupting weather patterns and ecosystems worldwide.
Modern AI systems use deep neural networks trained on large datasets to recognize patterns and make predictions.
Epigenetics studies heritable changes in gene expression that do not involve alterations to the DNA sequence itself.
The Standard Model describes the fundamental particles and forces of nature, confirmed by the discovery of the Higgs boson in 2012.