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Health

Here’s a military trick that can help you cool down in minutes, even in scorching heat

It's cheap, fast and effective.

via U.S Army Cadet Commons/Flickr

The U.S. Army's heat stroke training.

With temperatures rising worldwide, it's essential to know how to stay cool by reducing your body heat. It’s important to keep hydrated and wear breathable clothing, but if you want to cool off quickly, the military has a trick to reduce body temperature in minutes.

According to a CBS report, research shows that submerging your forearms and biceps in ice-cold water can help prevent overheating. That’s why the military uses arm immersion tables when training in hot weather or stationed in places where the heat is unbearable and it's impossible to get to an air-conditioned room. "It's low-tech, it's inexpensive, it's easy to implement," Lt. Col. Dave DeGroot, who runs the Army Heat Center at Fort Moore, told CBS. "It's a bucket of water." Arm immersion tables are long, narrow troughs filled with ice-cold water that stand on four legs.

To cool down, soldiers place their hands, arms, and wrists in the cold water for 3 to 5 minutes. Then, they raise their arms above their heads. This allows cooled blood to circulate throughout the body, lowering its temperature. It also allows the water to drip down their arms, cooling their core from the outside.



Soldiers who practice the technique say that while their arms are submerged, they feel the cold water circulate throughout their body, starting in the chest and then moving to their back.

"Your car has a radiator. Well, so do we. It's our skin," DeGroot said. "Our blood is going to cool off and circulate back to the core and eventually, with several minutes of exposure, bring the core temperature down.”

Arm immersion tables cool approximately 13% of the body, enough surface area to transfer body heat to the water. According to TechLink, immersing one's arms in cold water can reduce core body temperature by 2° F in 3 to 10 minutes. Two degrees may not sound like much, but considering that the average body temperature is usually between 97 and 100 degrees, it makes a huge difference.



In severe situations where hot soldiers appear pale, wobbly, or mentally incapacitated, the military uses ice sheets to cool them down. "An ice sheet is nothing more than a simple bed sheet that we use," Fort Jackson safety specialist Vinson Washington told the U.S. Army. “We submerge these in ice, and when a casualty overheats, we wrap them in these to cool them down until we can get medical personnel on the scene."

"We put them in a human taco, basically," 1st Sgt. Brendan Cain, an Air Assault School instructor, added. In the event a soldier goes down with a heat injury, they use the sheets to "cool down the (soldier's) core temperature," then "it's an automatic call to 911."

Arm immersion tables and ice sheets work because, according to TechLink, the heat transfer of water is 25 times greater than that of air. So, to cool someone off, it’s much more effective to immerse them in water than to place them in front of a fan.

There's no need to worry if you’re looking to beat the heat and don’t have a military-grade arm immersion tank. You can make something similar by taking a large cooler filled with ice water and placing it on a table or by filling your kitchen sink with water and adding some ice.


This article originally appeared in July.

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Climate Change

This glacier was featured on a postcard in 1900. A camera captured where it is today.

Whoa.


116 years ago, the Pasterze glacier in the Austria's Eastern Alps was postcard perfect:

Snowy peaks. Windswept valleys. Ruddy-cheeked mountain children in lederhosen playing "Edelweiss" on the flugelhorn.

But a lot has changed since 1900.

Much of it has changed for the better! We've eradicated smallpox, Hitler is dead, and the song "Billie Jean" exists now.

On the downside, the Earth has gotten a lot hotter. A lot hotter.

The 15 warmest years on record have all occurred since 1998. July 2016 was the planet's hottest month — ever.

Unsurprisingly, man-made climate change has wreaked havoc on the planet's glaciers — including the Pasterze, which is Austria's largest.

Just how much havoc are we talking about? Well...

A series of stunning photos, published in August, show just how far the glacier has receded since its heyday.

Photo by Sean Gallup/Getty Images.

First measured in 1851, the glacier lost half of its mass between that year and 2008.

The glacier today.

Photo by Sean Gallup/Getty Images.

A marker placed in 1985 shows where the edge of the glacier reached just 31 years ago. You can still see the ice sheet, but just barely, way off in the distance. In between is ... a big, muddy lake.

Photo by Sean Gallup/Getty Images.

The view from the glacial foot marker from 1995 — 10 years later — isn't much more encouraging.

Photo by Sean Gallup/Getty Images.

Even in just one year, 2015, the glacier lost an astounding amount of mass — 177 feet, by some estimates.

Photo by Sean Gallup/Getty Images.

Ice continues to melt daily, and while the dripping makes for a good photo, it's unfortunate news for planet Earth. Glacial melting is one of the three primary causes of sea-level rise.

Photo by Sean Gallup/Getty Images.

According to a European Environment Agency report, the average temperature in the Alps has increased 2 degrees Celsius in the last 100 years — double the global average.

Beautiful, but ominous, fissures in the glacier.

Photo by Sean Gallup/Getty Images.

It's not unreasonable to assume that that's why this mountain hut has been abandoned by the flugelhorn-playing children who once probably lived in it.

Photo by Sean Gallup/Getty Images.

Is there anything we can do to stop climate change besides look at scary glacier photos?

Climate change is, unfortunately, still a robust debate in the United States as many of our elected officials refuse to acknowledge that we humans are the ones doing the changing. As of last year, that list included a whopping 49 senators. Calling them to gently persuade them otherwise would be helpful. Not voting for them if they don't change their minds would be even more so.

There is some tentative good news — the Paris Agreement signed in December 2015 commits 197 countries, including the U.S., to take steps to limit future global temperature rise to 2 degrees Celsius. While it may be too late for the Pasterze glacier, if we really commit as a world, we might be able to stop ourselves from sinking whole countries and turning Miami into a swimming pool and stuff like that.

And who knows, with a little luck, and a little more not poisoning the sky, we just might recapture a little of that Alpine magic one day.

OK, these guys are Swiss. But who's counting?

Photo by Cristo Vlahos/Wikimedia Commons.

This article originally appeared seven years ago.

Science

What will Earth look like if all its land ice melts? Here's your answer.

Climate change isn't pretty.

via Business Insider Science/YouTube.

A map of the United States post land-ice melt.


Land ice: We got a lot of it.

Considering the two largest ice sheets on earth — the one on Antarctica and the one on Greenland — extend more than 6 million square miles combined ... yeah, we're talkin' a lot of ice.

But what if it was all just ... gone? Not like gone gone, but melted?

If all of earth's land ice melted, it would be nothing short of disastrous.

And that's putting it lightly.

This video by Business Insider Science (seen below) depicts exactly what our coastlines would look like if all the land ice melted. And spoiler alert: It isn't great.

Lots of European cities like, Brussels and Venice, would be basically underwater.

In Africa and the Middle East? Dakar, Accra, Jeddah — gone.

Millions of people in Asia, in cities like Mumbai, Beijing, and Tokyo, would be uprooted and have to move inland.

South America would say goodbye to cities like Rio de Janeiro and Buenos Aires.

And in the U.S., we'd watch places like Houston, San Francisco, and New York City — not to mention the entire state of Florida — slowly disappear into the sea.

All GIFs via Business Insider Science/YouTube.

Business Insider based these visuals off National Geographic's estimation that sea levels will rise 216 feet (!) if all of earth's land ice melted into our oceans.

There's even a tool where you can take a detailed look at how your community could be affected by rising seas, for better or worse.

Although ... looking at these maps, it's hard to imagine "for better" is a likely outcome for many of us.

Much of America's most populated regions would be severely affected by rising sea levels, as you'll notice exploring the map, created by Alex Tingle using data provided by NASA.

Take, for instance, the West Coast. (Goodbye, San Fran!)

Or the East Coast. (See ya, Philly!)

And the Gulf Coast. (RIP, Bourbon Street!)

I bring up the topic not just for funsies, of course, but because the maps above are real possibilities.

How? Climate change.

As we continue to burn fossil fuels for energy and emit carbon into our atmosphere, the planet gets warmer and warmer. And that, ladies and gentlemen, means melted ice.

A study published this past September by researchers in the U.S., U.K., and Germany found that if we don't change our ways, there's definitely enough fossil fuel resources available for us to completely melt the Antarctic ice sheet.

Basically, the self-inflicted disaster you see above is certainly within the realm of possibility.

"This would not happen overnight, but the mind-boggling point is that our actions today are changing the face of planet Earth as we know it and will continue to do so for tens of thousands of years to come," said lead author of the study Ricarda Winkelmann, of the Potsdam Institute for Climate Impact Research.

If we want to stop this from happening," she says, "we need to keep coal, gas, and oil in the ground."

The good news? Most of our coastlines are still intact! And they can stay that way, too — if we act now.

World leaders are finallystarting to treat climate change like the global crisis that it is — and you can help get the point across to them, too.

Check out Business Insider's video below:

This article originally appeared on 12.08.15

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The oldest whales on the planet are more ancient than 'Moby-Dick' and have the harpoons to prove it

Wow... just wow.

Image from Pixabay.

Under the sea...

True
The Wilderness Society


You're probably familiar with the literary classic "Moby-Dick."

But in case you're not, here's the gist: Moby Dick is the name of a huge albino sperm whale.

(Get your mind outta the gutter.)

There's this dude named Captain Ahab who really really hates the whale, and he goes absolutely bonkers in his quest to hunt and kill it, and then everything is awful and we all die unsatisfied with our shared sad existence and — oops, spoilers!


OK, technically, the narrator Ishmael survives. So it's actually a happy ending (kind of)!

whales, Moby Dick, poaching endangered species

Illustration from an early edition of Moby-Dick

Image from Wikimedia Commons.

Basically, it's a famous book about revenge and obsession that was published back in 1851, and it's really, really long.

It's chock-full of beautiful passages and dense symbolism and deep thematic resonance and all those good things that earned it a top spot in the musty canon of important literature.

There's also a lot of mundane descriptions about the whaling trade as well (like, a lot). That's because it came out back when commercial whaling was still a thing we did.

conservation, ocean water conservation

A non-albino mother and baby sperm whale.

Photo by Gabriel Barathieu/Wikipedia.

In fact, humans used to hunt more than 50,000 whales each year to use for oil, meat, baleen, and oil. (Yes, I wrote oil twice.) Then, in 1946, the International Whaling Commission stepped in and said "Hey, wait a minute, guys. There's only a few handful of these majestic creatures left in the entire world, so maybe we should try to not kill them anymore?"

And even then, commercial whaling was still legal in some parts of the world until as recently as 1986.

International Whaling Commission, harpoons

Tail in the water.

Whale's tail pale ale GIF via GoPro/YouTube

And yet by some miracle, there are whales who were born before "Moby-Dick" was published that are still alive today.

What are the odds of that? Honestly it's hard to calculate since we can't exactly swim up to a bowhead and say, "Hey, how old are you?" and expect a response. (Also that's a rude question — jeez.)

Thanks to some thoughtful collaboration between researchers and traditional Inupiat whalers (who are still allowed to hunt for survival), scientists have used amino acids in the eyes of whales and harpoon fragments lodged in their carcasses to determine the age of these enormous animals — and they found at least three bowhead whales who were living prior to 1850.

Granted those are bowheads, not sperm whales like the fictional Moby Dick, (and none of them are albino, I think), but still. Pretty amazing, huh?

whale blubber, blue whales, extinction

This bowhead is presumably in adolescence, given its apparent underwater moping.

GIF via National Geographic.

This is a particularly remarkable feat considering that the entire species was dwindling near extinction.

Barring these few centenarian leviathans, most of the whales still kickin' it today are between 20 and 70 years old. That's because most whale populations were reduced to 10% or less of their numbers between the 18th and 20th centuries, thanks to a few over-eager hunters (and by a few, I mean all of them).

Today, sperm whales are considered one of the most populous species of massive marine mammals; bowheads, on the other hand, are still in trouble, despite a 20% increase in population since the mid-1980s. Makes those few elderly bowheads that much more impressive, huh?

population, Arctic, Great Australian Blight

Southern Right Whales hangin' with a paddleboarder in the Great Australian Bight.

GIF via Jaimen Hudson.

Unfortunately, just as things are looking up, these wonderful whales are in trouble once again.

We might not need to worry our real-life Captain Ahabs anymore, but our big aquatic buddies are still being threatened by industrialization — namely, from oil drilling in the Arctic and the Great Australian Bight.

In the off-chance that companies like Shell and BP manage not to spill millions of gallons of harmful crude oil into the water, the act of drilling alone is likely to maim or kill millions of animals, and the supposedly-safer sonic blasting will blow out their eardrums or worse.

This influx of industrialization also affects their migratory patterns — threatening not only the humans who depend on them, but also the entire marine ecosystem.

And I mean, c'mon — who would want to hurt this adorable face?

social responsibility, nature, extinction

BOOP.

Image from Pixabay.

Whales might be large and long-living. But they still need our help to survive.

If you want another whale to make it to his two-hundred-and-eleventy-first birthday (which you should because I hear they throw great parties), then sign this petition to protect the waters from Big Oil and other industrial threats.

I guarantee Moby Dick will appreciate it.


This article originally appeared on 11.04.15

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