A Space Daily column

Life Signs

Nature and earth science

Life Signs is where Space Daily looks down instead of up. Animals, ecosystems, and Earth science, with a bias for peer-reviewed studies over press-release hype. The living world turns out to be at least as strange as anything in orbit.

Science

Why does a funnel-web spider new to science turn up at just three sites in northern Idaho, about 500 kilometres east of the western Cascades and coast ranges where its genus was known to live?

Four collecting dates at three sites near Kooskia and in the Nez Perce National Forest produced a mygalomorph spider from a genus whose only previous revision was published in 1979, and whose two other species live a long way west. The genetics place it firmly. The map around it does not.

Sep 4, 2026

Early Earth

Every living eukaryote appears to descend from a single ancestral lineage in which an archaeal-related cell formed a permanent partnership with a bacterium that became the mitochondrion. It is the only successful origin of mitochondria known, although neither the merger’s precise mechanism nor the number of failed, vanished attempts can be established.

The bacterial ancestry of mitochondria is clear across living eukaryotes, but the surviving family tree cannot reconstruct the merger’s physical steps or count partnerships that left no descendants.

Sep 4, 2026

Exo Worlds

Scientists call them “belatedly habitable planets”: worlds that enter their star’s habitable zone only after formation. Around M dwarfs, some may first endure hundreds of millions of years of intense radiation that splits atmospheric water and drives its hydrogen into space, leaving them dry before temperate conditions finally arrive.

A planet can enter the habitable zone only after its young red dwarf has faded, but the same early radiation may already have stripped away the water needed to benefit from milder conditions.

Sep 4, 2026

Exo Worlds

Just five times Earth’s ocean volume could submerge every continent on an Earth-sized planet, weakening the land-based weathering cycle that regulates carbon dioxide and supplies vital nutrients—but it would not necessarily make the planet uninhabitable.

Five Earth oceans could erase the continents and weaken familiar climate and nutrient cycles, but seafloor chemistry leaves room for long-lived, potentially inhabited waterworlds.

Sep 3, 2026

Materials

Humans account for only a tiny fraction of Earth’s living mass, but a 2020 study found the concrete and plastic we’ve built no longer does — human-made material overtook the weight of all life on the planet that same year

For the first time in history, humanity's creations now outweigh all living organisms combined, a milestone that exposes the hidden cost of our species' outsized planetary footprint.

Sep 2, 2026

Science

A black monkey with a pinkish-orange patch around its mouth was photographed in a Congo forest canopy in 2008, detected 114 times between 2018 and 2022, and only then named Colobus congoensis — by its describers’ count, the fifth African monkey species new to science in 75 years

Two communities had names for the animal before it had a Latin one. The paper describing Colobus congoensis rests on three confiscated bodies, two mitochondrial haplotypes and 114 detections, and it hedges harder than the announcement of it did.

Sep 2, 2026

Exo Life

Shallow hydrothermal vents are one of the few places on Earth where sunlight-driven and chemistry-driven food webs share the same square metre of seafloor

At shallow hydrothermal vents off Taiwan and Greece, chemosynthetic microbes fed by sulfur and heat share the seafloor with sunlit algae — and the same crabs eat from both food webs.

Sep 1, 2026

Flora And Fauna

New York restaurants send their used oyster shells to Governors Island, where they cure outdoors before being returned to the harbor as hard substrate for new reefs, and by the end of 2025 the Billion Oyster Project had collected 3.2 million pounds of shell and restored more than 180 million oysters across New York Harbor.

What New York's restaurants are turning into a second life for the harbor itself.

Sep 1, 2026

Flora And Fauna

In 1989, media billionaire Ted Turner bought the 113,613-acre Flying D ranch in Montana, removed its cattle and hundreds of miles of internal barbed-wire fencing, and shifted the land to bison — 37 years later, the property supports about 4,500 of them.

A massive Montana ranch shows how rewilding on billionaire-scale might reshape western land—and what gets left behind in the trade-offs.

Sep 1, 2026

Flora And Fauna

In 1890 and 1891, New York pharmaceutical manufacturer Eugene Schieffelin released about 100 European starlings into Central Park, and their descendants spread across North America, reaching roughly 200 million birds within a century before declining to a more recent estimate of about 85 million to 93 million

A beloved origin story about Shakespeare and starlings turns out to be mostly myth, obscuring what actually happened in Central Park.

Sep 1, 2026

Exo Worlds

After nearly 70 years of searching, humanity has found no confirmed evidence of extraterrestrial life—only potential biosignatures in a Martian rock, disputed chemistry 124 light-years away, and thousands of UAP reports that may have nothing to do with aliens at all. The answer, whatever it is, still arrives only in fragments.

Mars, K2-18 b and decades of UAP reports offer intriguing fragments, but each remains separated from confirmed extraterrestrial life by a different evidentiary gap.

Sep 1, 2026

Earth News

In 1978, Eleanor “Sandy” West and her family sold Georgia’s 26,000-acre Ossabaw Island to the state for half its appraised value while retaining the right to use the family home for the rest of her life; she lived on the island until 2016, died at 108 in 2021, and the preservation agreement still prohibits a bridge or causeway to the mainland.

A Georgia family's radical act of conservation—donating an island for half its worth, then ensuring it could never be developed by forbidding the one thing that would make it valuable: access.

Sep 1, 2026

Flora And Fauna

In 1859, Australian landowner Thomas Austin imported 24 wild rabbits from England and released 13 of them at his Barwon Park estate so he and his friends would have something familiar to hunt — and their descendants spread across almost the entire continent within 50 years.

A wealthy English settler's nostalgic hunting hobby sparked an ecological catastrophe that would reshape an entire continent.

Sep 1, 2026

Moon Daily

Across six Apollo landings, astronauts left a commonly cited 96 waste bags and containers on the Moon. Researchers have proposed retrieving one—not to clean up, but to discover whether any human microbes survived up to 57 years of lunar radiation, vacuum and extreme temperature swings.

Apollo's discarded jettison bags could test whether any viable human microbes or readable biological traces survived decades of radiation, vacuum and thermal cycling on the Moon.

Aug 31, 2026

Climate Science

The fossil record suggests extinction crises killing 10% of species occur roughly once per million years, while events killing around 65% occur roughly once per 100 million years — but these are episodic catastrophes, not a steady countdown toward the next mass extinction.

David Raup's fossil-record kill curve estimated average waiting times for extinction events of different magnitudes. Those intervals describe an uneven historical distribution, not a periodic schedule or forecast of when the next crisis will occur.

Aug 31, 2026

Climate Science

About 252 million years ago, Siberian volcanoes heated Earth’s oceans until much of marine life effectively suffocated — and scientists have now confirmed the same deadly combination of warming and oxygen loss is developing again today.

A 2026 PNAS study links end-Permian extinction patterns to temperature-dependent hypoxia, while modern observations show oceans are warming and losing oxygen. The mechanisms align, but the ancient catastrophe is not a direct forecast of present conditions.

Aug 31, 2026