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Latest articles

Pedigree collapse

Family tree
How many ancestors do you have? We all have 2 parents, 4 grandparents and 8 great grandparents. But does this go on forever?.. more »

How to find the length of a spherical spiral


How do we find the length of a spherical spiral, with equidistant spirals? Here's the solution to this interesting reader's question... more »

The Information Paradox

The Information Paradox
The Information Paradox is an interesting challenge to the accepted notions of how life on Earth came to be. There's some mathematics involved, too!.. more »

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