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Could an alien world look like this? Shutterstock

Curious Kids: What would aliens be like?

Somewhere out there, just maybe, an alien – probably stranger looking than in our wildest imagination – might be pondering this very question.
Evolution has no final endpoint in mind. Uncle Leo/Shutterstock.com

Evolution doesn’t proceed in a straight line – so why draw it that way?

If you go by editorial cartoons and T-shirts, you might have the impression that evolution proceeds as an orderly march toward a preordained finish line. But that's not right at all.
A modern arthropod (the centipede Cormocephalus) crawls over its Cambrian ‘flatmate’ (the trilobite Estaingia). Michael Lee / South Australian Museum and Flinders University

Life quickly finds a way: the surprisingly swift end to evolution’s big bang

Modern animals took over our planet much more quickly than previously thought. This has both welcome and disturbing implications for the future of life on our rapidly changing planet
An artist’s impression of Kepler-22b, a planet known to comfortably circle in the habitable zone of a sun-like star. It is the first planet that NASA’s Kepler mission has confirmed to orbit in a star’s habitable zone - the region around a star where liquid water, a requirement for life on Earth, could persist. NASA/Ames/JPL-Caltech

Curious Kids: why has nobody found any life outside of Earth?

Life could exist in another solar system in a different part our galaxy. Or in another galaxy far away. We don't have the perfect technology yet to study such far away places but we're still trying.
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Why biodiversity is key to our survival

There is an urgent need to reconsider the importance of diversity. It is not a simple wealth. It is both a property of the living and an essential condition for its survival.
Here, an alien crew member, Saru on Star Trek: Discovery. We often rely on science fiction to guide our expectations of alien life. We can hope lessons about accepting beings very different from yourself can be extracted by the series end. (Courtesy of CBS Studios)

Star Trek discovery of alien life veers away from likely reality

Star Trek: Discovery explores our corner of the block -- just a fraction of the galaxy. Some stars are better candidates for intelligent alien life, and it may not be anything like we imagine.
It’s happened before: why we need to plan for the next doomsday event that could wipe out much of life on Earth. Shutterstock/solarseven

How to backup life on Earth ahead of any doomsday event

NASA says there are ten "potentially hazardous" asteroids close to Earth. Good reason to make sure we have a backup plan should any catastrophic event wipe of much of life on Earth.
How many species of frog are in the picture? Genetics often says ‘more than we thought’. Michael Lee (Flinders University & South Australian Museum)

The Earth’s biodiversity could be much greater than we thought

The Earth is full of many varied species from the largest mammals to the tiniest organisms. But we now think there could be ten times more species than was originally thought.

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