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Science

Science

When these drones zoom in over elephants and rhinos, they stop horrible things from happening

A shepherd watches over sheep. Watching over elephants and rhinos? Not so easy.

via The Lindbergh Foundation

Drone footage from the Aerial Shepherd.


This is a story about something really exciting.

Before I get into it, let me set the stage by explaining the terrible problem it's solving.

10 years.

That's how long it'll be until the last wild elephants and rhinoceroses are gone.

100 of them are killed every day by poachers.

Even though elephants and rhinos are legally protected, the amount of money that can be made from the ivory in their tusks is just too much for some people to resist.


So poachers go after elephants and rhinos in secret. They kill them in out-of-the-way places that are hard to patrol, and they do it at night under the cover of darkness.

Every hour, another elephant or rhino family is broken forever.

Now the Lindbergh Foundation has come up with an idea about how to stop poachers.

They've been testing their idea for two years now, and it really works.

Air Shepherd uses drones and computers to watch over elephants and rhinos the same way a shepherd protects his sheep.


It's an amazing international, hi-tech system.

The drones in Africa are decked out with normal and infrared cameras that see where the animals — and the poachers — are. Even in the dark of night.

That imagery is sent to computers in the U.S. Using special software, they send back flight plans to the drones that predict where the animals are headed, which keeps the drones on top of the poachers.

Local rangers are notified, and they sweep in on the poachers.

During the 600 tests they've run so far, precisely zero poaching has occurred.

It's a fantastic system.

Seven African countries have already requested help.

The Foundation has provided the seed money. They need contributions, though, so head over to the Air Shepherd site to see how you can get involved in this amazing project.

Please let your animal-loving friends know about this breakthrough program that could keep elephants and rhinos from going extinct. It's so exciting.

(Unfortunately, the Lindbergh Foundation's video has been removed from YouTube. But here's an NBC News report about the project.)


This article originally appeared on 03.12.15

Science

Researchers dumped tons of coffee waste into a forest. This is what it looks like now.

30 dump truck loads and two years later, the forest looks totally different.

One of the biggest problems with coffee production is that it generates an incredible amount of waste. Once coffee beans are separated from cherries, about 45% of the entire biomass is discarded.

So for every pound of roasted coffee we enjoy, an equivalent amount of coffee pulp is discarded into massive landfills across the globe. That means that approximately 10 million tons of coffee pulp is discarded into the environment every year.



When disposed of improperly, the waste can cause serious damage soil and water sources.

However, a new study published in the British Ecological Society journal Ecological Solutions and Evidence has found that coffee pulp isn't just a nuisance to be discarded. It can have an incredibly positive impact on regrowing deforested areas of the planet.

via British Ecological Society

In 2018, researchers from ETH-Zurich and the University of Hawaii spread 30 dump trucks worth of coffee pulp over a roughly 100' x 130' area of degraded land in Costa Rica. The experiment took place on a former coffee farm that underwent rapid deforestation in the 1950s.

The coffee pulp was spread three-feet thick over the entire area.

Another plot of land near the coffee pulp dump was left alone to act as a control for the experiment.

"The results were dramatic." Dr. Rebecca Cole, lead author of the study, said. "The area treated with a thick layer of coffee pulp turned into a small forest in only two years while the control plot remained dominated by non-native pasture grasses."

In just two years, the area treated with coffee pulp had an 80% canopy cover, compared to just 20% of the control area. So, the coffee-pulp-treated area grew four times more rapidly. Like a jolt of caffeine, it reinvigorated biological activity in the area.

The canopy was also four times taller than that of the control.

Before and after images of the forest

The forest experienced a radical, positive change

via British Ecological Society

The coffee-treated area also eliminated an invasive species of grass that took over the land and prevented forest succession. Its elimination allowed for other native species to take over and recolonize the area.

"This case study suggests that agricultural by-products can be used to speed up forest recovery on degraded tropical lands. In situations where processing these by-products incurs a cost to agricultural industries, using them for restoration to meet global reforestation objectives can represent a 'win-win' scenario," Dr. Cole said.

If the results are repeatable it's a win-win for coffee drinkers and the environment.

Researchers believe that coffee treatments can be a cost-effective way to reforest degraded land. They may also work to reverse the effects of climate change by supporting the growth of forests across the globe.

The 2016 Paris Agreement made reforestation an important part of the fight against climate change. The agreement incentivizes developing countries to reduce deforestation and forest degradation, promote forest conservation and sustainable management, and enhance forest carbon stocks in developing countries.

"We hope our study is a jumping off point for other researchers and industries to take a look at how they might make their production more efficient by creating links to the global restoration movement," Dr. Cole said.


This article originally appeared on 03.29.21

Carl Sagan and a sliced apple

The concept of the fourth dimension seems beyond human comprehension. As three-dimensional beings, we are unable to see beyond a physical object's height, width and depth. What else could there be?

Enter Carl Sagan, revered as one of the greatest science communicators of his time. He possessed a unique gift for demystifying complex scientific concepts, making them accessible and thrilling for the general public. In 1980, on Episode 10 of the groundbreaking PBS show “Cosmos,” Sagan embarked on a mission to explain the seemingly impossible fourth dimension.


What’s excellent about Sagan’s explanation is that he uses simple and relatable objects: an apple and a Tesseract, or a hypercube.

Sagan began by discussing how a two-dimensional being living in a flat world would perceive a three-dimensional object like an apple.

“Imagine we live in this ‘flatland’/2-D plane with no concept of ‘up’ or ‘down.’ Then along comes a 3-D object like an apple. We do not even notice it until it crosses our plane of existence — and even then, we have no idea what the apple is,” Sagan explains. “We see only a fragment as it passes through our plane. There is no way we can comprehend the 3-D quality/dimension of the apple, because it is more than we can understand. We only have the evidence of what has passed through our plane.”

Sagan then related this two-dimensional experience of the third dimension to how we might try to understand the fourth. To do so, he used the Tesseract, a four-dimensional cube, to demonstrate how difficult it is for us to perceive or visualize dimensions beyond our own three. At this point, Sagan is asking the viewer to expand their minds to understand the fourth dimension metaphorically.

Sagan’s demonstration of the fourth dimension isn’t just a wonderful explanation of a scientific idea that many of us find difficult to comprehend; it’s also a great example of how to teach complex ideas by combining clear explanations with thought-provoking visuals.


This article originally appeared on 5.2.24

Science

A guy with a twisted sense of humor explains how your brain is quicker to judge than your eyes

You know that saying "You never get a second chance to make a first impression?"

Who's more trustworthy?


William Haynes wants to talk to you about your brain.

He's a comedian for SourceFed, and he's got kind of a strange, dark sense of humor.

So when he was invited to host an episode of Discovery's "DNews" about the science of first impressions, we knew it was going to be awesome.


Here's what he had to say.

Your brain can decide how trustworthy a person is just by getting a split-second look at their face.

education, research, first impressions, facial recognition

That’s pretty cool... and scary.

via DNews/YouTube

GIFs from "DNews."

Researchers, in a study published in the Journal of Neuroscience, found that our brains help us form all kinds of spontaneous judgments of people that we may not even be aware of, including whether we can trust them.

It's all thanks to the amygdala, the walnut-shaped area of the brain that helps us process strong emotions.

amygdala, neuroscience, studies, brain

Are we programmed to react without knowing it?

via DNews/YouTube

In the study, two groups of participants were analyzed. The first group was asked to rate how much they trusted certain people by looking at their faces while the researchers measured activity in the amygdala. Simple enough.

The second group was asked to lay inside an MRI machine while faces flashed on a screen in front of them. But here's the catch: The faces appeared and disappeared so quickly that the people in this group couldn't even really see them.

Here's what the study found.

Regardless of whether you get a long look at someone's face or only a glance, your amygdala lights up like crazy.

What's even cooler is that participants in the study pretty much agreed on which faces were trustworthy and which ones weren't.

There were certain traits that stood out as shady, like furrowed eyebrows and shallow cheekbones, in particular.

first impression, judgement, testing, agreeable

What is the science behind a first impression?

via DNews/YouTube

This only begins to scratch the surface of the super-awesome science behind first impressions.

Did you know that a person's voice can have a similar effect on perception, even in small doses?

After testing a group of 64 people, researchers in Scotland found that participants were consistently able to agree on which personality traits corresponded to which voices they heard — based solely on hearing them speak the word "hello."

The biggest remaining question is whether these snap judgments have a measurable impact on our behavior.

A study by Nalini Ambady and Robert Rosenthal found something pretty interesting.

According to Lifehacker, the two compared "the ratings given to college professors by classes at the end of the semester with ratings that another group of students gave the same professors based only on three ten-second silent video clips shown prior to any actual lectures."

The two groups mostly agreed on how much they liked the professors, indicating that, just maybe, first impressions really do matter.

Watch the full episode of "DNews" to learn more about cool brain stuff and catch William Haynes' killer one-liners below:

This article originally appeared on 10.18.14