Category Science

WHAT IS THE PERU PROBLEM OF AMAZON RAINFOREST?

Discussions on the perils faced by this iconic South American rainforest focus invariably on Brazil. However, the lingering political crisis in Peru, where the second-largest part of the Amazon lies, has also been simultaneously affecting the inhabitants of the region.

The political crisis

Peru has descended into one of the worst political crises in its history, and the protection of its Amazon rainforest is failing, according to a report published recently. Peru is home to the second-largest portion of the Amazon rainforest after Brazil. The country had pledged to stop deforestation by 2021.

The South American country has been immersed in political turbulence since 2016. Corruption scandals and disputes between the executive and legislative branches of government have led to intense turnover-four Presidents in five years. Peru’s current President, leftist outsider Pedro Castillo has already survived two impeachment attempts since he took office in July 2021.

The Monitoring of the Andean Amazon Project (MAAP), an initiative of the nonprofit Amazon

Conservation Association, reports that deforestation in the Peruvian Amazon has hit six historical highs in the last 10 years. The analysis is based on data from the University of Maryland, the U.S., which has kept records since 2002.

The worst year ever was 2020 when Peru lost around 4,20,000 acres of Amazon rainforest. Last year, that number declined, but still ranked as the sixth highest on record. Peruvian official data, which only goes through 2020, agrees.

Corrupt actors who benefit from environmental crime, together with the political crisis have resulted in a lack of govemment ability to fight environmental crime, the report said “What’s more, the Peruvian government continues to prioritize economic development over the protection of the Amazon rainforest.” The Igarape Institute commissioned the report from InSight Crime, a non-profit organisation focussed on investigating crime in Latin America

As in Brazil’s Amazon, cattle ranching and agriculture are the main drivers of deforestation. Agribusiness companies and poor migrants from other parts of Peru seize land illegally. Other illegal activities that harm the forest are gold mining, logging, and coca plantations.

The report titled The Roots of Environmental Crime in the Peruvian Amazon, identifies three actors behind deforestation: big businesses, such as palm oil companies: entrepreneurial criminal networks, which profit from the trade in timber, land or drugs, and cheap labour poorly paid workers who cut down trees and plant coca crops.

The Brazil problem

The largest portion of the Amazon lies in Brazil – within its borders the country holds roughly 60 % of the total forest area. It is also the country in which the forest has faced its worst decline. Deforestation has been happening here for more than five decades, and reports show that it has reached alarming heights under the current President Jair Bolsonaro’s administration, thanks to his encouragement of agriculture and mining and weakening of environmental protections in the region. In fact, in 2021, the deforestation in the Amazon was the highest since 2006. Apart from agriculture and cattle ranching, infrastructure development, forest fires, mining, and illegal logging are causes for widespread deforestation. Here’s something to put the level of destruction into perspective – “every minute an area of Amazon rainforest roughly equivalent to 5 football pitches is cut down”, according to WWF. The commercial exploitation has left us with a scenario that appears grim – scientists warn that the region “is approaching a critical tipping point at which the damage is irreversible”.

Why is the Amazon important?

There’s a reason the Amazon is often referred to as “the lungs of the Earth” – it produces at least 5% of the world’s total oxygen, and has played a crucial role in climate regulation. Not just that. For years, it has functioned as a ‘carbon sink, meaning it absorbs more carbon than it emits. However, that’s no longer the case. Scientists have discovered that the region now emits more carbon than it takes in. And the resultant impact on the environment is beginning to show – hotter temperatures, more forest fires, changing weather patterns altering habitats, etc. All of these affect not just the three million wildlife species dependent on the region for survival but also the hundreds of indigenous tribes that call the place home. Several of them have been displaced already, and many have their lands occupied illegally. When the forest disappears, it takes along with it its inhabitants and their culture, leaving in its wake a world that’s altered forever.

Picture Credit : Google 

WHAT IS THE FARTHEST WE HAVE GONE INTO THE EARTH?

What is the furthest down humans have gone? What is the Kola superdeep Borehole? Read on to find the answers.

In Jules Verne’s science fiction novel, Journey to the Centre of the Earth (1864), three men reach the centre of the Earth. Is this ever possible? Our planet is made up of three main layers- the crust, the mantle and the core. The continents and oceans are situated on the crust which is about 8 km thick under the oceans and between 35 and 40 km deep under the continents. Below the crust is the mantle which is about 2,900 km thick. Next comes the core. The outer core, about 2.250 km thick, is made up of melted iron and nickel, and contained within it, is a ball-shaped inner core believed to be made up of solid iron and nickel.

The centre of the innermost core is the centre of the Earth. So there are thousands of kilometres to descend to reach the centre of the Earth, and what is the furthest down we’ve gone? When the Russians and the Americans were engaged in a race to the moon several decades ago, they also embarked on a race to inner space to see how far down they could go. While the Americans did not make much headway in this race downwards (Project Mohole’), the Russians went at it, hammer and tongs, in the Kola Peninsula and dug a hole 12.262 km deep over a period of 24 years from 1965 to 1989. They wanted to go at least 15 km down,  but just could not. This is the closest we’ve been able to go to the centre of the Earth. The Kola Superdeep Borehole, as it is now called, attracts curious visitors from around the world.

Picture Credit : Google 

WHAT IS PRIVATE WEB BROWSING?

What happened when you browse the Net in incognito mode? Does it ensure anonymity?

You may have noticed a tab in Google Chrome and other browsers called private/incognito. Browsers usually store the web addresses or URLS of the sites you visit. That makes it easier for you to find them again later. In private (incognito) mode, your search history won’t be stored on the device you are using.

Your browser also stores cookies. These small data files can not only automatically enter passwords, so you don’t have to type them each time, they can also provide tracking information to advertising companies that want to figure out your browsing habits. If you have looked for the best sunglasses available in the market, for example, ads for sunglasses keep popping up on whatever website you are visiting! This is how the internet advertising industry creates detailed profiles of people’s online activities over time.

Private or incognito browsing helps here, since it can temporarily disconnect someone’s browsing from the technical means used to build up and maintain most of those profiles. Cookies won’t provide advertisers with the detailed information they’d otherwise mine. Sometimes private browsing enables you to get around paywalls that block you from reading content on subscriber-only sites. However, going incognito won’t make you anonymous or invisible online! Your internet service provider can track your web activities. The sites you visit will also know your location. And if you are logged in to your Google account when browsing, Google sees your search patterns, even in incognito mode.

Picture Credit : Google 

IS TIKTOK THE MOST POPULAR APP 2022?

TikTok took the top spot for most downloaded app in the first three months of 2022, beating Instagram and Facebook. The short-form video sharing app TikTok was the most downloaded app worldwide in first three months of 2022, according to a report from Sensor Tower.

TikTok is one of the world’s fastest-growing social media platforms. Sensor Tower recently released its “Q1 2022: Store Intelligence Data Digest” report in which TikTok was the top app by worldwide downloads in Q1 2022. The app previously had surpassed 3.5 billion all-time downloads in the first quarter of 2021, becoming just the fifth app (and the only one not owned by Meta) to achieve this milestone.

Since the start of 2022, TikTok has been downloaded more than 175 million times. TikTok has surpassed 10 million downloads for the past nine quarters now, while YouTube has surpassed the same threshold for eight consecutive quarters. No app has had more downloads than TikTok since the beginning of 2018 when WhatsApp had 250 million worldwide downloads, per the report.

There’s a lot to be said about the success of TikTok and where it’s going. The social media app is mainly dominant for its relevant trends, unique algorithm and a diverse set of communities for every niche subject matter. Just recently, its updates include interactive add-ons for in-feed ads as well as a test on a private dislike button for comments. It also recently launched its own AR development platform, Effect House.

When examining the global downloads on iPhones and iPads, the order of the top five apps has remained unchanged over the past three quarters. TikTok exceeded 70 million App Store downloads for only the third time in Q1 2022, driven by 11% quarter-over-quarter growth in Asia. Despite being banned in India, which has one of the largest markets for app installs in the world, the app was ranked third place overall in Asia. It was No. 1 in the App Store, yet in seventh place for Google Play in Asia.

Looking at U.S. overall downloads, TikTok has been the top app each quarter since Q1 2021. The last app to beat TikTok was Zoom in Q4 2020. Also, since Q1 2021, TikTok and YouTube have been the top two apps on the U.S. App Store each quarter. TikTok was also the number one app on Google Play for the third quarter in a row, with installs up 19% year-over-year.

The same five apps have taken the top spots in Europe for each of the past four quarters. TikTok and WhatsApp were in the top two positions, while Instagram went down a ranking from last quarter to the number four spot. Even though WhatsApp has been the top App Store app in Europe for each of the past seven quarters, TikTok has also held on to the top spot on Google Play over the same period.

These estimates made by Sensor Tower include worldwide downloads for iPhone, iPad and Google Play for January 1 through March 31, 2022. This excludes preinstalled apps. The company only reports unique installs and Android estimates do not include third-party stores. The figures represent aggregate installs of all app versions.

Credit : Tech crunch \

Picture Credit : Google 

BOLD AND OUTRAGEOUS ENERGY IDEAS

With World Environment Day falling in this month, it’s time to see how we are faring. More importantly, we need to learn about the audacious ideas people have come up with to give Earth a chance to recuperate. How good are these eco-friendly strategies? You decide!

A grand plan for the skies

Just when we are all set to harvest energy from solar panels, the cloudy skies play spoilsport. So what’s the solution? Japanese scientists have come up with an ingenious idea: send satellites into orbit carrying solar arrays up high where there are no clouds to block the sun’s rays. Transmitters in the satellite will also convert the solar energy into microwave energy that can potentially provide power to millions of homes. Is it possible that the microwave beams miss the transmitter and fry up something on Earth? Let’s hope that never happens.

Power from DIY tornadoes

A tornado is a powerful beast, capable of producing the same energy as a power plant… provided it is large enough. A Canadian engineer realized that taming such a beast would be the solution to our energy problems. All that was needed was an area bigger than two football fields and enough space above for manufacturing a spinning column. Some turbines here, and a generator nearby – bingo! You get loads of energy as long as the tornado does not go rogue and escapes its confines!

Hairy plants to the rescue! Who would have thought that hairy plants could one day save the planet? And no, they don’t have to be brought down by aliens. There are quite a few on our planet itself. According to a team at the University of California, hairy plants absorb more light but less heat. Apparently, if there were more such plants across the world, the global temperature could go down. That would mean selecting and developing hairy versions. As long as they don’t make us eat hairy spinach, this is worth a try!

Biogas to drive vehicle

Human waste can, in the future, seamlessly power cars and bikes when petrol is probably all gone. Under the right conditions, bio waste, crop stubble and leftovers from hotels can pool in to make commutes more eco-friendly. Think it’s far-fetched? In Sweden. an entire fleet of buses run on biogas generated from manure and leftovers. The future isn’t so bleak, after all!

The energy of hustling commuters

Rushing to catch a train or even simply sitting in the train can be precious in the future. Swedish scientists are investigating how the air made warm by commuters at Stockholm Railway Station can be harvested through heat exchangers. And just like that, it would be possible to provide heating for a building nearby. Will cities across the world be able to make their citizens feel like superheroes – or at least power generators? Time will tell.

The energy of hustling commuters

Rushing to catch a train or even simply sitting in the train can be precious in the future. Swedish scientists are investigating how the air made warm by commuters at Stockholm Railway Station can be harvested through heat exchangers. And just like that, it would be possible to provide heating for a building nearby. Will cities across the world be able to make their citizens feel like superheroes – or at least power generators? Time will tell.

Store carbon dioxide underwater

What if we could suck up carbon dioxide emitted from power plants and store them in large flexible polymer bags deep under the sea instead of releasing it into the air? As stunning as it sounds, scientists argue that the idea isn’t crazy. Pipes will feed the gas into these bags and they will remain for thousands of years undisturbed. Or at least, that’s what we hope (and also pray that sharks don’t sink their teeth into them!).

Picture Credit : Google 

HOW DID THE 1939 VODER SPEECH SYNTHESISER WORK?

On June 5, 1938, “Pedro, the Voder was put on display to the public for the first time at the Franklin Institute, Philadelphia One of the first devices to create human speech, the Voder was a successful experiment in reproducing speech electronically.

We are far too used to machine-made voices speaking to us in today’s world. Be it the automated responses that are provided to us when we call for customer support. personal assistants in our smartphones, or various devices that support a smart home ecosystem, there are plenty of examples in our everyday lives.

While we don’t often pause to think about these, there are instances when we talk about the technologies with a mixture of fear and reverence. That mixture of feelings was first experienced by human beings with the success of “Pedro, the Voder’.

Voice Operation Demonstrator

Voder is short for Voice Operation Demonstrator. Named “Pedro” after the Brazilian emperor Dom Pedro who is believed to have exclaimed “My God! It talks!” after listening to a telephone for the first time, the Voder was one of the first devices to bring us entirely synthetic speech.

The Voder was the brainchild of pioneering engineer Homer Dudley, an acoustic visionary and an inventor at Bell Labs. He rose to prominence in the 1920s when he created the popular “channel” vocoder. This was capable of coding human speech across telephone lines by transforming incoming speech into electrical signals and then replicating it on the other end by using electric sounds that mimicked human speech.

Artificial human sound

With the Voder, Dudley went one step further as this device was able to produce speech without human voice as an input. Dudley filed a patent for a system for the artificial production of vocal or other sounds in April 1937. Weeks before this patent was granted to him, the Voder had its first public demonstration at the Franklin Institute in Philadelphia on June 5, 1938.

The Voder was operated – or played according to its creators – to create about 20 different electric sounds. By using 10 keys, a wrist plate, and a pedal, the operator could orchestrate the electric sounds to make them sound like speech and even create a range of inflections.

Operating the Voder, however, was no easy feat as it required thinking about how sounds combine to form a word, and how subtle inflection changes alter the meaning. In fact, the Voder was almost entirely operated by a Helen Harper, who was also responsible for teaching the 20-30 people who ever learnt how to use it.

Crowds amazed

During the presentations at the Franklin Institute, the 1939 New York World’s Fair, and San Francisco’s Golden Gate International Exposition, Harper was seated behind a console as she worked her magic. She was able to make the voder speak statements and ask questions; say the same sentence using different inflections; make its voice sound like a female, male, or like an old person; or even mimic a cow. Making the voder recite “Mary had a little lamb” in all of its different voices was a popular trick that the bell Labs team employed.

Bell Labs, however, never meant to sell the machine as a commercial product and only used it as a proof of concept. This meant that it vanished following its successful tours of various venues. Apart from leaving the audience with a sense of wonder, Bell Labs was able to show that the Voder was capable of making electrical vibrations that translated into sound waves in the loudspeaker, without needing to manipulate air. Speech synthesis and machine-made human voices have come a long way since then.

Picture Credit : Google