Pollyanna Hartley

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Berberine: The Most Powerful Natural Supplement on Earth

By Kris Gunnars<p>A compound called berberine is one of the most powerful natural supplements on Earth.<p>It has very impressive health benefits, and …


Astronomers Just Discovered a Morse Code Message in The Dunes of Mars

Not aliens.<p>NASA has spotted a series of strange, dark dunes on Mars that look uncannily like the dots and dashes that make up Morse code.<p>This isn't …

Mars Mission

Grow A Bacterial Zoo In A Bottle

How to build your own Winogradsky column<p>In the 1880s, Russian microbiologist Sergei Winogradsky sealed pond water, mud, and nutrients in a clear tube. The column gave rise to a diverse mix of pond bacteria, which organized into layers based on their energy sources: carbon, hydrogen, sulfur, or …


Predator or prey? The eyes have it - Futurity

House cats have pupils that are vertical slits, but bigger cats, like tigers and lions, don't. A new study of predators and prey could explain why.


Mathematical déjà vu, and Coffee

Last week I was in a hotel in Edinburgh where the whole bedroom was vibrating for some unexplained reason, at an almost imperceptible level. The Bessel functions in my glass of water were a key part of the evidence that persuaded the manager to move us<p>Occasionally I get asked what it was that first …