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Mind & Meaning
The psychology of ambition, isolation, and meaning under extremes — and what frontier life teaches us about being human.
Saudi Arabia imports sand — despite being a country dominated by desert, the sand of the Arabian Peninsula is too smooth and round for use in construction concrete, because thousands of years of wind erosion have polished the grains to a shape that does not bond well with cement, and most construction sand must be imported from countries like Australia
Sequoia and redwood trees alive today were already mature when the Roman Empire was at its peak — the oldest living giant sequoias are over 3,000 years old, which means they were standing in California before the Parthenon was built in Athens, before Julius Caesar was born, and before the Roman Empire even existed
More than 60% of the water in a wood frog's body can freeze solid each winter: its heart stops, it stops breathing, and for more than 7 months it can lie essentially a frogsicle, before it thaws out in spring and simply hops away
Stonehenge is widely known as one of the oldest monumental stone structures in the world, but hunter-gatherer societies in southeastern Turkey built circles of T-shaped limestone pillars 6,000 years earlier, weighing up to 50 tonnes each and predating the human invention of agriculture by approximately 4,000 years
A single cumulus cloud — the kind that looks like a fluffy white pillow drifting across a summer sky — typically contains hundreds of tons of water by weight, suspended in the air because the water droplets are small enough that air resistance keeps them aloft against the pull of gravity
On a sunny day, the top of the Eiffel Tower slowly drifts in a small circle about six inches wide — it isn't the wind, it's the sun, heating one side of the iron at a time and making the whole tower lean a little away from whichever side is warmest
Sound travels about four times faster underwater than it does through air — which is why whale songs can travel hundreds of miles across the ocean, and why early submarine sonar operators sometimes picked up the calls of distant whales communicating from hundreds of miles away
Oxford University is older than the Aztec Empire — teaching at Oxford began in 1096, while the Aztec capital Tenochtitlán was founded in 1325, which means Oxford was already more than two centuries old by the time the civilization that built one of the most sophisticated cities of the medieval world had even begun
We talk about anxiety as if it starts in the mind — but for some people, the eyes may be the first place it shows up
Thought of the day from Stoic philosopher Marcus Aurelius: "Each of us lives only now, this brief instant. The rest has been lived already, or is impossible to see."
