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Could a gamma-ray burst wipe out all life on Earth?
science.howstuffworks.com/gamma-ray-burst-life-earth.htm
When a huge star collapses, it releases massive amounts of radiation in concentrated streams. If one of those streams hit Earth, it wouldn't be pretty. But where should we put "gamma-ray bursts" on our list of anxieties?
How the Ancient Land Blob Gondwana Became Today's Continents
science.howstuffworks.com/environmental/earth/geology/gondwana.htm
Gondwana was a humongous landmass that persisted for 300 million years before it began to break up, forming all the continents in the modern Southern Hemisphere.
Some Starfish Have Up to 40 Arms! Plus 10 Other Starfish Facts
animals.howstuffworks.com/marine-life/starfish.htm
What lives in water, has no gills, scales or fins and is not a fish? A starfish — which is why marine biologists renamed these creatures sea stars.
The Plant Quiz
play.howstuffworks.com/quiz/the-plant-quiz
Every species and category of plant we can come across is vastly unique from one another, and their function in the world is even more distinctive. Can you ace this quiz on the differences and intricacies within the plant world?