Muddy Footprints Suggest 2 Species of Early Humans Were Neighbors in Kenya 1.5 Million Years Ago

An aerial view shows a research team standing alongside the fossil footprint trackway at the excavation site on the eastern side of Lake Turkana in northern Kenya in 2022. AP
An aerial view shows a research team standing alongside the fossil footprint trackway at the excavation site on the eastern side of Lake Turkana in northern Kenya in 2022. AP
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Muddy Footprints Suggest 2 Species of Early Humans Were Neighbors in Kenya 1.5 Million Years Ago

An aerial view shows a research team standing alongside the fossil footprint trackway at the excavation site on the eastern side of Lake Turkana in northern Kenya in 2022. AP
An aerial view shows a research team standing alongside the fossil footprint trackway at the excavation site on the eastern side of Lake Turkana in northern Kenya in 2022. AP

Muddy footprints left on a Kenyan lakeside suggest two of our early human ancestors were nearby neighbors some 1.5 million years ago.
The footprints were left in the mud by two different species “within a matter of hours, or at most days,” said paleontologist Louise Leakey, co-author of the research published Thursday in the journal Science.
Scientists previously knew from fossil remains that these two extinct branches of the human evolutionary tree – called Homo erectus and Paranthropus boisei – lived about the same time in the Turkana Basin.
But dating fossils is not exact. “It’s plus or minus a few thousand years,” said paleontologist William Harcourt-Smith of Lehman College and the American Museum of Natural History in New York, who was not involved in the study.
Yet with fossil footprints, “there’s an actual moment in time preserved,” he said. “It’s an amazing discovery.”
The tracks of fossil footprints were uncovered in 2021 in what is today Koobi Fora, Kenya, said Leaky, who is based at New York's Stony Brook University.
Whether the two individuals passed by the eastern side of Lake Turkana at the same time – or a day or two apart – they likely knew of each other’s existence, said study co-author Kevin Hatala, a paleoanthropologist at Chatham University in Pittsburgh.
“They probably saw each other, probably knew each other was there and probably influenced each other in some way,” The Associated Press quoted him as saying.
Scientists were able to distinguish between the two species because of the shape of the footprints, which holds clues to the anatomy of the foot and how it’s being used.
H. erectus appeared to be walking similar to how modern humans walk – striking the ground heel first, then rolling weight over the ball of the foot and toes and pushing off again.
The other species, which was also walking upright, was moving “in a different way from anything else we’ve seen before, anywhere else,” said co-author Erin Marie Williams-Hatala, a human evolutionary anatomist at Chatham.
Among other details, the footprints suggest more mobility in their big toe, compared to H. erectus or modern humans, said Hatala.
Our common primate ancestors probably had hands and feet adapted for grasping branches, but over time the feet of human ancestors evolved to enable walking upright, researchers say.
The new study adds to a growing body of research that implies this transformation to bipedalism – walking on two feet — didn’t happen at a single moment, in a single way.
Rather, there may have been a variety of ways that early humans learned to walk, run, stumble and slide on prehistoric muddy slopes.
“It turns out, there are different gait mechanics – different ways of being bipedal,” said Harcourt-Smith.



Part Toy, Part Fashion, the Arrival of the Viral Labubu Was a Long Time in the Making

A person holds up Labubu dolls in a store during an organized press tour to Popland, a theme park opened by Chinese toy company Pop Mart, in Beijing, China, 02 June 2025. (EPA)
A person holds up Labubu dolls in a store during an organized press tour to Popland, a theme park opened by Chinese toy company Pop Mart, in Beijing, China, 02 June 2025. (EPA)
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Part Toy, Part Fashion, the Arrival of the Viral Labubu Was a Long Time in the Making

A person holds up Labubu dolls in a store during an organized press tour to Popland, a theme park opened by Chinese toy company Pop Mart, in Beijing, China, 02 June 2025. (EPA)
A person holds up Labubu dolls in a store during an organized press tour to Popland, a theme park opened by Chinese toy company Pop Mart, in Beijing, China, 02 June 2025. (EPA)

Labubu, the plush toy from China's Pop Mart is a social media darling, but the toothy little monsters are far from an overnight success. Having appeared a decade ago, Labubus may have finally cemented their place in the collectible toy market for years to come.

The Labubu, by artist and illustrator Kasing Lung, first appeared with pointed ears and pointy teeth, in three picture books inspired by Nordic mythology in 2015.

In 2019 Lung struck a deal with Pop Mart, a company that caters to toy connoisseurs and influencers, to sell Labubu figurines. But it wasn't until Pop Mart started selling Labubu plush toys on key rings in 2023 that the toothy monsters suddenly seemed to be everywhere, including in the hands of Rihanna, Kim Kardashian and NBA star Dillon Brooks. K-pop singer Lisa of Blackpink began posting images of hers for her more than 100 million followers on Instagram and on TikTok, where Labubu pandemonium has broken out.

There are 1.4 million #Labubu TikTok posts and counting, videos of fans unboxing them, showing styles inspired by them, and of course, Labubu cosplay.

Fans have latched on to Labubu’s mashup of play and fashion, making them accessories on handbags, backpacks and belts, or hanging them from car mirrors.

“The character has evolved into a collectible and style symbol, resonating with fans who connect with its quirky aesthetic and unique backstory,” Emily Brough, Popmart’s head of IP licensing in the Americas, said.

Labubu has been a bonanza for Pop Mart. Its revenue more than doubled in 2024 to 13.04 billion yuan ($1.81 billion), thanks in part to its elvish monster. Revenue from Pop Mart's plush toys soared more than 1,200% in 2024, nearly 22% of its overall revenue, according to the company's annual report.

Aside from their ability to pique the interest of toy aficionados and fashionistas, Labubu latched on to the blind box phenomenon, where the purchaser doesn't know exactly which version of the plush toy they'll get.

And Pop Mart made sure there is a Labubu for everyone, regardless of income. Most are priced in a wide rage between $20 and $300, with certain collaborations or limited editions priced higher, according to Brough.

Unlike many toys, Labubu devotees include a large number of adults. Buyers ages 18 and over drove a year-over-year increase of more than $800 million in the US toy market in 2024, according to market research firm Circana. Adult shoppers, mostly female, bought the toys for themselves. In 2025's first quarter, toy sales for those ages 18 and over rose 12% from the prior-year period. At $1.8 billion, adults also accounted for the highest spending among all age groups in the quarter.

Like many retailers, Pop Mart is actively monitoring negotiations between the US and just about every one of its trading partners as prices may be impacted. The situation with China is at the forefront, with President Donald Trump saying on Friday that the country “violated” an agreement with the United States on trade talks.

Right now Pop Mart, whose products are manufactured across Asia, says that it is continuously scaling production and expanding distribution across its online shop, retail stores and blind box vending machines to meet increasing demand.

Short supply has led to long lines at stores and at least one physical fight at a shopping center in the United Kingdom. Pop Mart said in an Instagram post late last month that it was temporarily suspending all in-store and blind box machine sales in the UK Peter Shipman, head of Europe, said in a Facebook post that the company is currently working on a new method to distribute toys to stores.

Resellers have become problematic and many Labubu fans are still willing to pay exorbitant price markups.

Kena Flynn was at The Grove shopping center in Los Angeles recently when she stumbled upon some Labubus being sold at a kiosk. Flynn said in a TikTok on Sunday that the prices were “really bad,” but her boyfriend bought two anyway.

“At a certain point, you can’t buy them,” Flynn said in her video. “I just want a Labubu and I cannot buy one from Pop Mart, so here we are.”

Looking to keep up with the overwhelming demand, Pop Mart says it's on track for 50 more retail locations in the US by the end of the year. That'll give shoppers more chances to hunt for Labubus, as Pop Mart says it's planning multiple new Labubu releases tied to seasonal moments and holidays throughout the rest of the year.