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climate change

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

Science

People say clouds look different these days. It's not suspicious — it's climate change.

Here's the scoop on why you might be seeing more people talking about clouds and conspiracies.

Photos by Cristina Anne Costello on Unsplash (left) and Mark Valentine on Unsplash (right)

People say they used to see more fluffy cumulus clouds against a brighter blue sky. They may not be wrong.

Have you noticed that clouds are looking a bit different than you remember them when you were younger? Less fluffy and more wispy? Fewer billowing clouds against a bold, blue sky and more washed out skies with see-through cloud patterns?

There have always been different kinds of clouds, of course, but people are remarking that something seems to have changed, which has led to all kinds of conspiracy theories. Combined with the debunked theories about contrails being "chemtrails," a whole new wave of suspicions about our skies is taking hold. Some people say it's all in their heads, but others are insistent that the sky just isn't the same.

There is a scientific explanation for why clouds might actually be changing, but not one that conspiracy-minded folks are going to like. It's most likely due to climate change, as climate scientists predicted that these cloud changes would be coming years ago.


First, let's look at the different kinds of clouds and where they form in the atmosphere. Those billowy, cartoon-like cumulus clouds we all enjoy are formed at lower altitudes, while the wispy cirrus or spotty cirrocumulus clouds that make the sky look washed out or mottled are formed higher up in the stratosphere. In reality, all different cloud types are common, but climate change is making those higher, wispier ones more common.

chart showing different kinds of clouds

Fluffy clouds are low clouds, wispy clouds are high clouds.

Valentin de Bruyn / Coton (Wikimedia Commons)

In 2016, Dr. Ilissa Ocko explained that models had predicted that climate change would push clouds higher in the sky and scientists were starting to see evidence of it happening. Ocko, who earned her Ph.D. and M.A. in Atmospheric and Oceanic Sciences at Princeton University, wrote, "A warmer Earth elevates clouds because the troposphere, the lowest layer of our atmosphere where weather occurs, can extend higher with a hotter surface." As the

Not only are higher cloud formations an effect of climate change, but they also contribute to it. While clouds reflect the sun's light, higher clouds also trap heat, potentially accelerating the warming of the planet's surface. As Ocko explained:

"Anything that absorbs energy must also re-emit energy. How much is released depends on the temperature of the object.

Heat absorbed and then re-emitted by low clouds that are close to the ground is similar to the heat emitted by the surface because the temperature of the ground and the cloud are similar.

But the higher the cloud is in the sky, the colder it is. So when these high clouds absorb Earth’s heat, they re-emit it at a much lower temperature, forming a blanket that traps heat in the climate system similar to how greenhouse gases trap heat."

side by side images of cumulus clouds and cirrus clouds

Cumulus clouds vs. cirrus clouds (and contrails)

Photos by Cristina Anne Costello on Unsplash (left) and Mark Valentine on Unsplash (right)

So what we end up with, in theory, is a self-perpetuating issue of higher cloud formation both being propelled by and amplifying climate change.

However, the science is still very much in flux when it comes to clouds and climate change. Predictive models aren't perfect, and some phenomena scientists expected have played out differently in real life, both for better and for worse. For instance, more recent research shows that trade cumulus clouds, which help cool the Earth, are affected less than expected by a warming atmosphere. That's good news. On the other hand, scientists have also found that mixed-phase clouds, which were predicted to have a dampening effect on climate change, don't help as much as they thought, especially when temperature rise accelerates. That's not good news.

There are a lot of cloud-climate change connections and scientists are continuously looking for clues and possibilities for how clouds can help or hinder our efforts to battle the climate crisis.

But what about the contrails that some folks erroneously call "chemtrails"? Despite being a well-known phenomenon of clouds formed from the condensation of a jet's exhaust, they too play a role in climate change. Contrails form when the humidity and temperature the plane is flying through are right (cold and humid), and the troposphere where modern planes fly provide tend to provide those conditions.

While contrails aren't some big government conspiracy to drop toxic chemicals on the unsuspecting populous, they aren't harmless. Some contrails dissipate quickly, but under certain atmospheric conditions, they can linger and spread out to create those wispy clouds that trap heat in the atmosphere. Some estimates cite contrails as being responsible for more than a third of the total aviation contribution to climate change.

contrails criss crossing in the sky

Contrails are a known phenomena in aviation and a problem for climate change.

Photo by Brigitte Elsner on Unsplash

Thankfully, the aviation industry is testing ways to best reduce contrails, including flying at different altitudes. There are tradeoffs with fuel consumption, so a balance has to be struck, but as we learn more there will surely be more innovations that help.

The bottom line is that yes, clouds may actually be different from what we remember in our youth, but it's not because of anything nefarious or suspicious. It's most likely what scientists have seen coming for years and we are now seeing the effects of—climate change. All the more reason for us to take action to slow it down now.




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 on 3.11.17

Science

32 years separate this before and after of a beautiful Washington forest. Take a look.

Our relationship with our planet can be mutually beneficial if we commit ourselves to sustainability.

A return to green over decades.


Douglas Scott grew up on Washington's Olympic Peninsula in the dying shadow of the timber industry that had supported the region for decades.

"Nearly every home had a bright orange or yellow sign reading 'This home supported by timber dollars,'" Scott wrote on Outdoor Society.


While the region has also been recognized for its succulent seafood, temperate climate, and stunning natural formations, nothing shaped the community — or the physical landscape — quite like logging did.

rebuilding, Olympic Peninsula, logging

Logging repercussions felt on the Olympic Peninsula.

Olympic Peninsula, circa 1972. Photo from the Records of the Environmental Protection Agency.

The tension in the air between the loggers and the environmentalists throughout the 1980s was thicker than the trees being cut down.

"I heard from old timers in the Harbor about how environmentalists were ruining the region, and I was told by environmentalists that loggers were killing everything in sight," Scott recalled.

But to understand the full impact of deforestation on the region, it helps to take the bird's eye view.

Here's a satellite image of the Olympic Peninsula from 1984. The white region in the center are the mountaintops in Olympic National Park; you'll also notice the grey and brown areas along the western and northern coasts of the peninsula.

satellite images, deforestation, tourism

Satellite image of deforestation on the region of the Olympic Peninsula.

Screenshot via GoogleEarth Engine.

"When I moved away from the area in 1997, there wasn't much of a logging or mill economy in dozens of towns around the region," Scott said.

By that time, tourism had begun to take the place of timber as the region's major industry — which was probably helped along by the fact that the trees were slowly but surely starting to recover, enhancing the already stunning vistas that drew visitors.

Here's how the Olympic Peninsula looked by the time that Scott and his family left the area; you'll notice the western and northern coasts are just a little bit greener than they were 13 years prior...

recovery, ecology, healing

Some green coming back.

Screenshot via GoogleEarth Engine.

Those great green arbors continued their gradual recovery into the 2000s...

trees, parks, Google Earth

More forest returns to the peninsula.

Screenshot via GoogleEarth Engine.

And they're still going today.

ecosystem, timber, wood

And still more green comes back.

Screenshot via GoogleEarth Engine.

But those isolated moments don't tell the whole story of the region's recovery. It's even more remarkable when you can see it in action...

habitat, climate change, going green

Olympic Peninsula demonstrating the power of nature.

GIF via GoogleEarth Engine.

We don't always notice the world changing right before our eyes, but the decades-long view of the Olympic Peninsula shows the true power of nature.

It's not just the trees, either; according to Scott, the replenished forests have also had a positive impact on the local salmon population and other treasured natural resources.

erosion, growth, wildlife, earth

Mother Nature doing her thing.

Left photo from Records of the Environmental Protection Agency; Right, by Miguel Vieira/Flickr.

That doesn't mean we shouldn't use the natural world, of course. We still need wood, for example, but now we know there are sustainable ways to use it without recklessly damaging to the planet.

The Earth was built to take care of itself. We just need to let Mother Nature do her thing.


This article originally appeared on 12.22.16