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A new study analyzing data from NASA's Perseverance rover has uncovered compelling evidence of multiple mineral-forming events just beneath the Martian surface -- findings that bring scientists one step closer to answering the profound question: Did life ever exist on Mars?

It is harder for our bodies to absorb key nutrients from plant-based foods, so some vegans may be short on essential amino acids for healthy muscles and bones despite eating plenty of protein

Beginning around 3000 years ago, Tel Shiqmona in modern-day Israel was a major centre for the production of Tyrian purple, a valuable commodity produced from marine snails

A weakening of Earth’s magnetic field known as the Laschamps event would have increased the threat of solar radiation, perhaps requiring ancient humans to invent protective measures

It is rare to find brown dwarf stars orbiting in pairs, and this pair has an even more unusual exoplanet companion

The dream of finding life on an alien Earth-like world is hampered by a number of technical challenges. Not the least of which is that Earth is dwarfed by the size and brightness of the Sun. We might be able to discover evidence of life by studying the molecular spectra of a planet's atmosphere as it passes in front of the star, but those results might be inconclusive. The way to be certain is to observe the planet directly, but that would take a space telescope with a mirror 3–4 times that of Webb.

Enjopy this one-minute video of a largehead hairtail (Trichiurus lepturus), the “liquid metal fish”, also called the “beltfish”.  As you can see, it’s a predator, and it’s gone some set of choppers. Its metallic color apparently camouflages it from prey. And look at that dorsal fin!

Some info from Wikipedia (their bolding):

The largehead hairtail (Trichiurus lepturus) or beltfish is a member of the cutlassfish family, Trichiuridae. This common to abundant species is found in tropical and temperate oceans throughout the world. The taxonomy is not fully resolved, and the Atlantic, East Pacific and Northwest Pacific populations are also known as Atlantic cutlassfish, Pacific cutlassfish and Japanese cutlassfish, respectively. This predatory, elongated fish supports major fisheries.

I wish they wouldn’t hold these things so long out of the water, as it makes them suffer. And I hope even more that they didn’t kill it.

How can astronomers pierce through the interstellar fog of the Milky Way – not to study distant objects, but to understand the fog itself? It just takes a little light.

Space agencies from the US, Europe and Japan are all making plans to visit the asteroid Apophis when it makes an extremely close flyby in 2029 to learn how to deflect others like it

From timetable scheduling to colouring in, and even casting a play, this nifty piece of mathematics is the answer, says Katie Steckles

Black Mirror's new season is a mixed bag, ranging from a sublimely plotted romp to one of the worst episodes to date. And it's still playing fast and loose with its sci-fi concepts, finds Bethan Ackerley

Photographer Mitch Epstein's years-long project highlights the majesty and vulnerability of old growth forests across the US

Why is saying no to other people so difficult – even when we really know we should? Sunita Sah's new book Defy has some novel ideas about the interpersonal forces holding us back

General relativity is an astonishingly beautiful theory, and grappling with why it disagrees with quantum mechanics is a joy, says Chanda Prescod-Weinstein

Feedback was pleased to come across journalist Taylor Lorenz's coining of the word "viralflation", as videos with hundreds of millions of hits proliferate across the internet

The idea that the rise of tech means today's young people are less intelligent than previous generations is rife – but wrong, says neuroscientist Dean Burnett

Exposing the origins of the improbable – and at times scary – plans of tech billionaires makes Adam Becker's More Everything Forever a disturbing but important book

Quantum theory started with a bout of hay fever, and went on to transform our view of the universe – but its legacy isn't complete

Researchers have helped overturn the popular theory that water on Earth originated from asteroids bombarding its surface; Scientists have analyzed a meteorite analogous to the early Earth to understand the origin of hydrogen on our planet. The research team demonstrated that the material which built our planet was far richer in hydrogen than previously thought. The findings support the theory that the formation of habitable conditions on Earth did not rely on asteroids hitting the Earth.

A researcher has developed an autonomous driving algorithm for agricultural robots used for greenhouse cultivation and other farm work.