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9 articles from Guardian Unlimited Science

Psychedelic brew ayahuasca’s profound impact revealed in brain scans

Study gives most advanced picture yet of DMT compound’s effect on advanced functions such as imaginationThe brew is so potent that practitioners report not only powerful hallucinations, but near-death experiences, contact with higher-dimensional beings, and life-transforming voyages through alternative realities. Often before throwing up, or having trouble at the other end.Now, scientists have...

Mystery solved after strange lights spotted over California night sky

Astronomer says unusual sighting 99.9% certain to be due to burning space debris from International Space StationWeeks after a balloon, an “octagonal structure” and other flying objects put Americans on edge, the US is dealing with another mysterious phenomenon in the sky.On Friday night in Sacramento, St Patrick’s Day partiers spotted streaks of light blazing a path through the California...

Did you solve it? The infinite monkey theorem

The answer to today’s typing teaserEarlier today I set you the following puzzle, based on the idea that a monkey sat at a typewriter bashing random keys will eventually type out the complete works of Shakespeare. Here it is again with the solution.The magic word Continue...

Calls for ban on light-polluting mass satellite groups like Elon Musk’s Starlink

Astronomers urge people to stand up to ‘big light’ industry amid unchecked brightening of night skyA ban on megaconstellations of low-altitude satellites – arrays such as Elon Musk’s Starlink – should be considered, astronomers have said, in an effort to reduce light pollution and preserve our ability to study the skies.In a series of papers and opinion pieces published in the journal...

Fate of 1,000 trafficked lab monkeys at center of US investigation in limbo

Long-tailed macaques at risk of being killed, or laundered or re-trafficked if returned to Cambodia, animal welfare groups sayMore than a thousand Cambodian monkeys at the center of a US government investigation into wildlife trafficking are at risk of being killed or returned to their country of origin, laundered and re-trafficked, animal welfare groups say.The monkeys’ plight first came to...

A winter of the mind: how to escape survival mode

For many of us, it has been a cold and traumatic year. But, as one reader found, difficult times can lead to new and revolutionary ways of thinkingWalking into the NHS clinic where I work as a psychotherapist, I saw that the daffodils by the path had finally flowered. My heart lifted: new life; spring springing; winter ending. But the change in the seasons may bring little relief to those whom...

Can you solve it? The infinite monkey theorem

Go ape with your brainThe infinite monkey theorem states that if you let a monkey hit the keys of a typewriter at random an infinite amount of times, eventually the monkey will type out the entire works of Shakespeare.Today’s puzzle involves a monkey typing out something a little shorter. Continue...

Keep taking the crapsules: how I became a faecal transplant donor

Faecal transplants might help treat illnesses such as arthritis, diabetes and cancer. And one day it could be as simple as taking a pill made from a stranger’s poo. Our writer volunteers a sampleTo my fellow travellers, I’m sure the package I’m carrying looks like a lunchbox. Circular, and dark blue, with a Tupperware-style lid, it is precisely the kind of vessel you’d transport a soup or...

Starwatch: a tiny sliver of moon between Venus and Jupiter

New moon will be the thinnest of all crescents with just 5% of its surface illuminatedA reward awaits those making their way home, or elsewhere, in the evening later this week. The chart shows the view looking due west from London at 18.50 GMT on Thursday 23 March. The tiny sliver of the new moon will sit between the brightly shining planets of Venus and Jupiter.The former will be high in the...