New Clear Coating for Everyday Objects Repels Practically All Liquids

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iStock

A new clear coating that is said to repel just about everything—peanut butter included—aims to halt the advance of sticky fingers. Developed by researchers at the University of Michigan, the substance can be applied to a variety of surfaces to keep them smudge- and crud-free, including smartphone and laptop screens, windows, walls, and countertops.

Researchers used algorithms to predict which substances would yield an efficient omniphobic coating, or in other words, something capable of repelling oils, alcohols, and other liquids while remaining durable and smooth. Made from a mix of fluorinated polyurethane and a fluid-repellent molecule called F-POSS, the coating can be “sprayed, brushed, dipped, or spin-coated onto a wide variety of surfaces, where it binds tightly,” according to the University of Michigan’s website.

The team’s findings were published in the March issue of the journal ACS Applied Materials Interfaces. Associate professor Anish Tuteja, who headed up the University of Michigan research team, says it could be a godsend for parents of young tots.

"I have a 2-year-old at home, so for me, this particular project was about more than just the science," Tuteja said in a statement. "We're excited about what this could do to make homes and daycares cleaner places, and we're looking at a variety of possible applications in industry as well."

The team is currently conducting follow-up tests to ensure the coating is nontoxic, but if all checks out, it could find its way into kindergarten classes and daycare centers within the next two years.

Child-proofing everyday objects for the sake of cleanliness isn’t its only potential application, though. The university notes that it could be beneficial to “all industries that depend on the condensation of liquids,” such as refrigeration, power generation, and oil refining.

In recent years, other researchers have set out to create omniphobic coatings, some of which have been successful. However, this undertaking is typically challenging and involves complex synthetic chemistry, according to Chemistry World.

Human Body Temperatures Are Dropping, and Science Might Know Why

dcdp/iStock via Getty Images
dcdp/iStock via Getty Images

In 1868, German physician Carl Reinhold August Wunderlich started to popularize what’s become the most recognizable number in all of medicine: 98.6°F or 37°C, which is thought to be the normal average human body temperature. Though his methods later came under scrutiny—Wunderlich stuck an enormous thermometer under the armpits of patients for 20 minutes, a less-than-accurate technique—this baseline has helped physicians identify fevers as well as abnormally low body temperatures, along with corresponding illnesses or diseases.

More than 150 years later, 98.6° may no longer be the standard. Humans seem to be getting cooler. Researchers at Stanford University School of Medicine, in a paper published in the journal eLife, compared three large datasets from different time periods: American Civil War records, a national health survey from the 1970s, and a Stanford database from 2007-2017. By comparing recorded body temperatures, the researchers founds that men are now averaging a temperature .58°C less than what's long been considered normal, while women are .32°C lower. On average, each has decreased roughly .03°C every decade since the 1860s.

What drove us to chill out? Scientists have a few theories. A number of advances in human comfort have been ushered in since the 1800s, including better hygiene and readily available food, which may have slowed our metabolic rate (temperature is an indication of that rate). Chronic inflammation, which also raises body temperature, has decreased with the advent of vaccines, antibiotics, and better healthcare. The researchers propose that, on average, our bodies are healthier and slightly less warm.

After all, the average life expectancy in Wunderlich’s era was just 38 years.

[h/t The Independent]

Last Wild Grove of Wollemi Pines, the Endangered ‘Dinosaur Trees,’ Saved From Australia's Wildfires

Marina Denisenko, iStock via Getty Images
Marina Denisenko, iStock via Getty Images

Almost three decades after they were rediscovered, the ancient "dinosaur trees" of Australia's Wollemi National Park were nearly wiped out for good. Wildlife officials in New South Wales feared that the last natural stand of Wollemi pines would be counted among the billions of plants and animals destroyed by Australia's recent wave of wildfires. But thanks to quick action from firefighters, the ancient grove has been saved, The Guardian reports.

The first Wollemi pines date as far back as 200 million years, and the trees reached peak numbers 65 million to 34 million years ago. Since then, populations have shrunk so drastically that the species was thought to be extinct until it was rediscovered 26 years ago. Fewer than 200 wild specimens exist today, and they're all concentrated in a protected sandstone grove in Wollemi National Park, about 125 miles northwest of Sydney, Australia.

The Wollemi pines' fragile status means that one bad forest fire could spell its end. With this in mind, the New South Wales National Parks and Wildlife Service and NSW Rural Fire Service prioritized their protection this bushfire season. Before the Gospers Mountain fire spread to the canyons where the trees grow, a team of firefighters was sent there by helicopter to install an irrigation system. This kept the trees hydrated and made them less vulnerable to flames. Helicopters also dumped fire retardant around the grove to weaken the fire when it arrived.

The efforts weren't able be able to save every Wollemi pine from damage and destruction—a few trees survived with charring and two more died—but they were enough ensure the continuation of the species. With a population this small, protecting it is a never-ending battle. In addition to fire, visitors stepping on seedlings and introducing diseases also pose a threat. For that reason, the Australian government has chosen to hide the exact location of the grove from the public.

[h/t The Guardian]

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