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How to Verify Connected Devices on Your iPhone’s Hotspot

sporadic hotspot disconnects, it’s significantly more secure than accessing the internet through an arbitrary free Wi-Fi hotspot. Additionally, if your other devices belong to the Apple ecosystem, linking to your iPhone’s hotspot is effortless.

Nonetheless, as it relies on your iPhone’s mobile data connection, it can swiftly exhaust your data allowance if not monitored. A way to mitigate this issue is to keep track of which devices are connected to your iPhone’s hotspot and their data consumption. Luckily, two features on the iPhone can assist you with this. Here’s how to monitor the quantity of your iPhone’s hotspot connections at any moment, as well as the potential data these connections have used.

How to view the number of hotspot connections on iPhone

Ten Unexpected Energy Sources That Can Serve as Fuel

In a realm where conversations revolve around solar panels, wind turbines, and nuclear energy, some of the most intriguing innovations in energy are occurring in surprising areas. Researchers are delving into various methods, including utilizing moisture to decompose plastic into recyclable materials, transforming seawater into hydrogen, and even converting banana skins into biogas.

The energy of the future hinges not merely on ingenuity but also on accessibility. A clean technology is significant only if it is cost-effective enough for widespread acceptance. Consequently, researchers are increasingly focusing on inexpensive, everyday substances that many of us consider trash. Just imagine if the remnants of your morning brew or the byproducts from a winery could one day provide fuel for cars, buses, or even aircraft.

What once appeared to be of no value may hold the secret to powering the globe. Hence, let’s explore 10 unexpected sources of energy that you likely never thought could be utilized as fuel.

**Your morning coffee could fuel a bus ride**

Your regular caffeine indulgence might provide more than longevity — it could genuinely energize the bus you ride to your job. It may sound incredible, but studies have shown that used coffee grounds harbor oils ideal for biodiesel production. A startup from London, Bio-Bean, has already teamed up with transport authorities to convert thrown-away coffee grounds into biofuel for buses.

The method is straightforward yet ingenious. The grounds are gathered from coffee shops, processed to extract oil, and transformed into biodiesel. Impressively, this new fuel functions effortlessly in current diesel engines, eliminating the need for expensive adjustments. This method is not only effective, but it is also environmentally friendly as it minimizes waste, cuts emissions, and lessens reliance on fossil fuels.

Billions of coffee cups are consumed worldwide annually, generating significant amounts of refuse. If even a small part of that waste were redirected as fuel, the environmental benefits would be monumental.

**Seawater can be split into hydrogen fuel**

Seawater, which envelops over 70% of our planet, may become a principal source of clean energy. Researchers at the University of Adelaide have devised a technique to convert seawater into green hydrogen fuel, negating the expensive extraction of salt. Standard electrolysis (the separation of water into hydrogen and oxygen) often necessitates purified water due to salt’s corrosive effect on electrodes. By employing a unique non-precious catalyst, the team circumvented this issue.

The advantages are significant. Green hydrogen is a clean energy source, and generating it directly from seawater helps to lower costs and energy consumption. Outside the laboratory, companies like Equatic are further enhancing this concept, with a method that not only extracts hydrogen fuel but additionally compels seawater to absorb more carbon dioxide from the atmosphere, sequestering it as stable minerals. This implies that the ocean can serve both as a carbon sink and a fuel producer.

Although extensive adoption is still underway, this breakthrough could completely alter energy generation, paving the way for clean fuel and climate action simultaneously.

**Yes, pee can power lights**

It may sound like a science project gag, but urine can indeed create electricity. Researchers at the University of Bath have crafted small fuel cells that utilize bacteria to decompose compounds in urine. As these microorganisms process the waste, they emit electrons, which travel through a circuit to generate electric current. A similar concept was investigated at Northwestern University to harness nearly unlimited energy from the soil through microbial fuel cells.

This technique has been tested in educational institutions in Kenya and Uganda, where it supplies LED lights in restrooms and even charges small gadgets. Beyond the novelty, this technology shines in regions where grid electricity is pricey or unstable, turning waste into an affordable electricity source.

Though the power generation is relatively modest, it illustrates how unforeseen bio-resources can aid actual communities in fulfilling basic energy requirements. Who imagined that the restroom could function as a miniature power station?

**Tofu factories are cooking up biogas**

Tofu may be a protein-packed dish on your table, but its production generates substantial soybean pulp and wastewater. Instead of allowing these byproducts to waste away, researchers have discovered a method to convert them into biogas through anaerobic digestion. In this oxygen-free environment, microorganisms decompose organic material, releasing methane-rich gas suitable for cooking, heating, or electricity generation.

Factories in Indonesia are already harnessing this system. What’s clever is that tofu waste can yield the very energy that sustains tofu manufacturing facilities. It’s economical, sustainable, and diminishes reliance on fossil fuels. Unlike advanced technologies, this approach is relatively uncomplicated and repurposes existing waste products and techniques.

By transforming food waste into fuel, tofu factories exemplify how circular economies can redefine sectors. They not only nourish people, but also power themselves and contribute to a greener energy landscape.

**Algae could fuel your flight**

Air travel is a well-known contributor to carbon emissions, yet a slimy green solution has the potential to change that. Algae, abundant in oils and rapidly growing in saltwater, is emerging as a viable candidate for sustainable aviation fuel.

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Activating Windows’ Concealed Ultimate Performance Power Plan

Windows includes various settings, typically found in less obvious areas, that can be adjusted to alter functionalities on your computer, such as its security or power usage. One of these settings is rather well-concealed and is called the performance power plan.

Launched in 2018, it utilizes Microsoft’s High-Performance power plan to enhance your computer’s performance by allowing the hardware to draw all the power it requires. Consequently, it provides power more swiftly and directly, instead of assessing how that power should be managed and when it ought to be supplied.

Nonetheless, this ultimate performance power plan is not readily accessible for a specific reason. Such continual power consumption can be quite taxing on your computer. It can lead to significant overheating and deplete the battery more rapidly. Moreover, you may find that the actual power increase is not as substantial as you had anticipated.

How to activate the performance power plan on Windows 10 and 11

Newly Discovered Mineral on Mars: Importance and Consequences

Mars Orbiter (which marked 15 years of achievements a couple of years ago) soaring high above Mars.

After collecting the data from the Mars Orbiter, researchers employed a method to examine the light bouncing off the surface of the planet. This method, known as spectroscopy, allows us to determine the chemical composition of minerals from a distance. It is one of the techniques utilized to predict the composition of distant planets. Once they obtained the findings, the researchers discovered they were encountering something unprecedented: ferric hydroxysulfate, a mineral previously unrecorded on Mars. So, why is this significant? This specific mineral forms when water, iron, and sulfur are present. All these components imply that Mars may have once had the suitable conditions for chemical reactions akin to those during Earth’s formative period. This suggests that Mars might have once been capable of supporting life.

The enigma

The identification of ferric hydroxysulfate (Fe3+SO4OH) on Mars was the culmination of many years of meticulous investigation spearheaded by Dr. Janice Bishop and her team at the SETI Institute. Their research concentrated on scrutinizing a complex and geologically diverse region of the planet, known as the Valles Marineris, a system of canyons and valleys situated close to the Martian equator. The group employed an instrument referred to as CRISM (Compact Reconnaissance Imaging Spectrometer for Mars), which assesses how sunlight is reflected from the planet’s surface.

While analyzing the data obtained from CRISM, the researchers observed distinct light signatures in two specific areas of the canyon system: the Juventae Chasma and Aram

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Efficient Applications of Motion Sensors for Residential Safety and Comfort

intelligent security solutions and monitoring, yet they can serve as excellent and budget-friendly devices that you can utilize at home for various other functions as well. Motion detectors are straightforward to program, and they can link to virtually any other gadget with minimal technical skills. They are compact and frequently priced under $50, such as the Ring Alarm Motion Detector. You can position them strategically throughout your home to control lighting, track activity, or alert your family members when you arrive.

Motion sensors are not merely for ease and protection. They can also be utilized to bring a touch of style to your dwelling by making your spaces react to your arrival. You can configure one to play music when you step into the shower or activate a scent diffuser in your guest room. It’s also feasible to schedule feed times for your pets, alleviating concerns about missed meals or overfeeding. You can automate nearly anything with motion sensors, so here are five clever ways to employ them.

Automated lighting

Steps to Fix Gmail Problems on Android Devices

The Gmail AI email summary is precise. The positive aspect is that Gmail provides solutions for particular issues that may arise.

The initial solutions are quite evident. Is your mobile device linked to the internet? At times, we may lose connectivity due to server upkeep, so that should always be your first check. The second step is to ensure your Gmail application is current. Look for any updates available for the app in the Play Store and set them up.

Nevertheless, sometimes the issue is more complex. For instance, if an error message appears indicating that Gmail cannot secure your connection, it could mean your date and time settings are incorrect. There may also be synchronization problems with your Gmail app, which you can address via Settings. Factors such as inadequate storage and accessing Gmail through a non-Gmail account can also result in complications.

What steps to take if you encounter a Gmail error message

The Uncommon Nature and Present Worth of the Atari Cosmos

project that featured 3D holograms — a technology that is still in the experimental phases today. Their work culminated in the launch of the Atari Cosmos video game console in 1981. Atari promoted the device by asserting that its holographic technology generated realistic 3D visuals on a compact and portable console.

The twist was that the holographic visuals did not influence gameplay at all. Instead, Atari utilized them as game overlays, enabling two 3D images to be projected for each game. The core technology of the console employed industry-standard LEDs on a 7×6 grid to emit light, akin to other basic portable consoles of that era.

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Steps to Link Your Amazon Fire Stick Remote with a Different TV

best streaming devices, since they are budget-friendly, responsive, and offer access to a vast array of applications and games. They are also straightforward to install and shift between televisions, as they function autonomously. Thus, it’s easy to transport them with you on vacations and outings to enjoy a uniform and dependable entertainment experience.

Although you normally don’t need to re-sync a Fire TV Remote with the streaming stick when switching TVs, the Fire TV Stick’s Equipment Control feature might necessitate a reconfiguration if the streaming device is connected to a different TV, particularly if it’s a different model from the one you originally used.

Equipment Control is based on an HDMI standard known as Consumer Electronics Control (CEC), and it lets you manage devices like your TV, soundbar, and AV receiver. It’s only accessible on Fire TV Stick versions that include a remote with power and volume controls. While all recent Fire TV Sticks are equipped with a remote featuring these controls, earlier models, like Fire TV Stick Lite and Fire TV Stick, did not include the same remote. This feature will also be non-functional if CEC is not available or turned off on your TV. Nonetheless, with both CEC and Equipment Control support enabled, configuring your Fire TV remote to operate a new TV’s features is relatively straightforward. Here’s how to proceed.

How to connect Fire TV Stick’s Equipment Control feature to a new TV

How to Utilize FaceTime on Android Devices with an Easy Alternative

iOS 18 along with the compatible macOS 15. With merely a few taps or clicks, you can initiate a video or audio call with your friends or family. Beyond standard one-on-one video and audio calls, FaceTime provides a multitude of other features, such as group calls, end-to-end encryption, the capacity to transition a FaceTime call to another Apple device, customize a virtual background, react with responses, share your screen, and utilize SharePlay.

While it’s widely recognized that FaceTime operates on Apple devices, you may not be aware that Android users can also participate in FaceTime for both one-on-one and group calls. Admittedly, there isn’t a FaceTime for Android application available in the Google Play Store, but that doesn’t imply billions of Android users are unable to join a FaceTime call. FaceTime permits individuals with Apple devices to invite others, including those using an Android phone, to join a call through their web browser. Here’s how this process functions.

How to FaceTime on Android

Remote Black Hole Mirrors Eye of Sauron from Lord of the Rings

The “The Lord of the Rings” novels and those who appreciated Peter Jackson’s award-winning film adaptations of the tale will recognize the Eye of Sauron. This term referred to how the main villain of the narrative, Sauron, monitored his warfare and sought the One Ring. Positioned at the pinnacle of Barad-dûr, the eye bore a likeness to a dark void encircled by fire.

A recent finding called this antagonist to mind as a group of scientists aimed to comprehend how formidable jets from blazars can propel particles to astonishingly high energies, generating both gamma rays and neutrinos. Their results appeared in the Astronomy & Astrophysics journal titled “Examining the jet cone of the neutrino-associated very high-energy blazar PKS 1424+240” on August 12, 2025.

In this research, the team concentrated on a blazar known as PKS 1424+240 (a blazar is a term for a galaxy energized by a black hole). The blazar under examination bore a striking resemblance to the Eye of Sauron, and their investigation may contribute to elucidating what is known as the Doppler factor dilemma.

How the Eye of Sauron black hole got its name