This week’s science news reveals the identity of the mysterious “Dragon Man,” while also finding clues to the universe’s “missing matter.”
In 1933, a Chinese laborer in Harbin City discovered a human-like skull with a huge cranium, broad nose and big eyes. Just under 90 years later, experts gave this curious specimen a new species name — Homo longi, or “Dragon Man” — due to its unusual shape and size. But this classification has not gone unchallenged, with many scientists saying this skull belongs not to a new species, but instead to an ancient group of humans called Denisovans. Now, a pair of new studies claim to have finally put the mystery to bed.
Another mystery that we came one step closer to solving this week is where the universe’s “missing” matter is hiding. Ordinary or “baryonic” aryonic matter, which is composed of particles like protons and neutrons, makes up just 5% of the universe, but scientists have been able to observe only about half as much of it as they expected. To find the missing matter, researchers search for clues by studying short, extragalactic flashes known as fast radio bursts, which light up the intergalactic space that lies between them and Earth — and they may have just found some.
Although very few long-term studies of psilocybin — the main psychoactive ingredient in magic mushrooms — as a treatment for depression have been conducted to date, new research presented this week at the Psychedelic Science 2025 conference suggests it can alleviate depression for at least five years after a single dose.
The researchers found that 67% of study participants who had suffered from depression half a decade earlier remained in remission after a single psychedelic therapy session, while also reporting less anxiety and less difficulty functioning on a daily basis.
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Life’s Little Mysteries
