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Physics, biology, astronomy, and the everyday science behind how the world works. 51 answers

bonobo, nature, primates
Which Living Species Is Closest to Modern Humans?

Learn why chimpanzees and bonobos are the closest living relatives of modern humans and what that really means.

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sunset, clouds, orange
Why Does the Sun Look Different Colors at Different Times?

Learn why the Sun looks white, yellow, orange, or red at different times, and how Earth's atmosphere scatters sunlight.

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Cat face with two eyes
Why do most animals have two eyes?

Discover why most animals have two eyes and how it benefits their survival. Learn about depth perception, field of view, and the evolutionary advantage of…

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A polar bear on the ice
Do polar bears get a cold?

Learn why polar bears don’t get colds, how they stay warm in the Arctic, and what adaptations they have to survive freezing temperatures.

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baby, asleep, child
Should we edit the human genome to eradicate genetic diseases?

Should we edit the human genome to eradicate genetic diseases? Explore the ethical dilemmas and potential benefits of this powerful technology.

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A tomato being injected, illustrating genetic engineering
What are the different types of gene editing techniques, and how do they work?

Discover the different types of gene editing techniques, including CRISPR-Cas9, ZFNs, and TALENs, and how they work to modify DNA.

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dna, biology, science
What shift in thinking did the discovery of DNA bring to biology and medicine?

Learn how the discovery of DNA changed our understanding of biology and medicine, shifting from observation to manipulation, one-size-fits-all to…

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A satellite orbiting in outer space
What are the different types of satellite orbits, and how do they affect the coverage area?

Learn about different types of satellite orbits, including LEO, MEO, GEO, SSO, and polar orbits. Discover how these orbits affect the coverage area a…

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Fencing game
Why are fencers tethered?

Learn why fencers are tethered with wires, how it works, and the different scoring systems used in fencing.

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data, security, keyboard
Why do we have fingerprints?

Discover the fascinating reasons why we have fingerprints, from enhanced grip to increased sensitivity. Explore the unique patterns and their role in human…

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A page in a dictionary
How did the first translator learn a second language?

Discover how the first translators might have learned a second language in ancient times through natural immersion, sign language, and trade.

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A towering ocean wave
What else can cause tsunamis besides earthquakes?

Discover the hidden causes of tsunamis beyond earthquakes, including underwater landslides, volcanic eruptions, meteorite impacts, and even man-made…

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hurricane, hurricane irene, tropical cyclone
What is the difference between a typhoon and a hurricane?

Learn the difference between a hurricane and a typhoon. Discover how these powerful storms are classified and why their names vary based on location.

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A cat
What is the purpose of whiskers on cats and dogs’ faces?

Discover the amazing purpose of whiskers on cats and dogs! Learn how these sensitive hairs act as “radar” for navigation and hunting.

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cyber brain, computer, brain
Do we only use 10% of our brains?

Debunking the myth that humans only use 10% of their brains. Learn why we use every part of our brain and how science has proven this to be true.

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A glowing atom illustrating quantum physics
Are quantum computers related to quantum mechanics?

Learn how quantum computers are intimately connected to the strange and fascinating world of quantum mechanics.

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lightshow, laser, music
What is quantum mechanics?

Learn about the mind-bending world of quantum mechanics, where particles can act like waves and we can’t know everything about a particle at the same time.

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face, woman, old
What is the bottleneck to the limit of human lifespan?

Discover the factors that limit human lifespan and learn about the latest research on aging and longevity.

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space, exoplanet, planet
Do Aliens Exist?

Explore the fascinating question of whether aliens exist, the ongoing search for extraterrestrial life, and the possibilities that lie within the vast universe.

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meteorite, space, asteroid
How did the dinosaurs become extinct from the earth?

Learn about the most likely cause of the dinosaur extinction: a catastrophic asteroid impact that triggered a chain of events leading to their demise.

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pharaoh, pharaoh and mother, isis
How do scientists use carbon dating to determine the age of artifacts?

Learn how scientists use carbon dating to determine the age of ancient artifacts and understand the history of our planet.

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uncertainty relation, board, physics
What are the implications of Heisenberg’s uncertainty principle?

Understanding the implications of Heisenberg’s Uncertainty Principle, from the unpredictability of the future to the observer’s influence on reality.

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chemistry, crown, coronavirus
What are the main challenges in developing an HIV vaccine?

Learn about the major obstacles hindering the development of an effective HIV vaccine, including the virus’s rapid mutation, ability to hide, lack of a…

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sun, solar flare, space
What color is the sun?

Discover the true color of the Sun and why it appears yellow from Earth.

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