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Oil spills in the North Sea exceeded the safe level – activists



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In 2022, wind and solar power generated a record amount of electricity in the world



Record growth in wind and solar power last year pushed global electricity generation to its cleanest levels, reflecting a renewable energy boom that researchers say could herald “the beginning of the end of the fossil age,” the report says.

An analysis published on Wednesday by independent think tank Ember showed that 12% of global electricity will come from solar and wind in 2022, up from 10% of global electricity generation in 2021.

The report said solar was the fastest growing source of electricity for the 18th consecutive year, growing 24% year on year and adding enough capacity to meet South Africa’s annual electricity demand.

The increase in wind generation, which increased by 17% in 2022, could power nearly all of the UK, the report says.

“We are entering a clean energy era,” said Malgorzata Viatros-Motika, senior power analyst at Ember and lead author of the study. “The stage is set for the wind and sun to achieve a blistering climb to the top. Clean electricity will change the global economy, from transportation to industry and beyond.”

Wiatros-Motyka added: “A new era of fossil fuel reduction means that coal power will be phased out and the end of gas power growth is just around the corner.”

Based on electricity data from 78 countries last year and representing 93% of global electricity demand, the researchers said the analysis provides the first accurate picture of the transition to electricity in 2022.

This shows that over 60 countries currently generate over 10% of their electricity from wind and solar.

It found that renewable energy and nuclear sources combined accounted for 39% of global electricity production in 2022, a new record.

Despite this progress, the researchers said that the rapid development of wind and solar energy is still not fast enough to meet all of the world’s growing electricity needs. Consequently, the report notes that coal and other fossil fuels are covering the remaining deficit, bringing emissions to a new record high.

Last year, coal, the world’s dirtiest fossil fuel, was found to be the world’s largest source of electricity, producing 36% of the world’s energy.

The burning of fossil fuels such as coal, oil and gas is the main driving force climate emergency.

“Much more needs to be done to ensure that developing countries are not left behind and stuck in a high-carbon future,” said Damilola Ogunbii, Director-General and Special Representative of the UN Secretary-General on Sustainable Energy for All.

Ogunbii said that the fact that coal-fired power remained the world’s largest source of electricity last year confirms that the energy sector is failing to meet zero-emission targets. “The deployment of wind and solar power needs to be significantly and urgently accelerated.”

Ember’s report says 2022 could be the peak year for electricity emissions and the final year of fossil energy growth, with clean energy to meet all demand growth in 2023.

Analysts are forecasting a 0.3% fall in fossil fuel generation this year, with sharper falls expected in subsequent years as wind and solar energy deployment accelerates.

International Energy Agency said last year that the electricity sector must move from being the most emitting sector to becoming the first sector to reach net zero by 2040 — if the global economy is to be decarbonized by mid-century.

For that to happen, Ember analysts say, wind and solar will need to account for 41% of the global energy mix by 2030, a sharp increase from the 12% seen in 2022.

Li Shuo, Greenpeace’s senior policy adviser for East Asia, called China “an 800-pound gorilla when it comes to the global energy sector.”

“This is not only due to the sheer size of China, but also to the alarming development trend of its electricity sector. China is without a doubt leading the way in the global expansion of renewable energy. But at the same time country speeds up approval of coal projects“, Lee said.

“This will not take the country far from true decarbonization. Rapid energy sector reforms are needed to bring the country back to the carbon neutral vision it has set for itself.”

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EHT image of the black hole Messier 87 reconstructed with a new machine learning algorithm



The famous Event Horizon Telescope (EHT) image of the supermassive black hole at the center of Messier 87 has received its first official change thanks to the PRIMO machine learning technique.

The EHT report on black hole Messier 87 reconstructed with a new machine learning algorithm first appeared on Sci.News: Breaking Science News.

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The best cordless rotary tools of 2023



Yavor Kalev/

Cordless rotary tools are essential DIY kits. They are battery powered, portable and can be used in hard-to-reach places. In this roundup, we’ve rounded up some of the best cordless rotary tools you should be using for all your crafts, gigs, or work.

What to Look for in a Cordless Rotary Tool

There are hundreds or thousands of brands of cordless rotary instruments out in the wild. Knowing what to buy can be tricky if you haven’t used it before. Here are some factors to consider before buying:

Best Overall: DREMEL Lite 7760-N/10 Cordless Rotary Tool



  • Ideal for home use and uncomplicated use
  • Four speed settings from 8000 to 25000 rpm.
  • 10 free accessories with quick accessory change and LED battery indicator


  • Not suitable for cutting, drilling or milling

If you often do small DIY jobs and crafts, then the DREMEL Lite 7760-N/10 cordless rotary tool is perfect for you. In fact, it’s our top pick for the best cordless rotary tool. It comes with 10 free accessories for most of your projects and can easily handle anything from woodworking to carpentry, car care, jewelry making and more. However, it is not ideal for milling, cutting and drilling.

Changing accessories is easy with the patented EZ Twist Nose Cap that eliminates the need for a wrench. It has a 1.8″ collet and is variable speed from 8000 to 25000 rpm with four speed settings. This 4V battery powered tool features a low battery LED indicator and can be charged using a USB charger. Portable and lightweight, it offers comfortable handling for enhanced maneuverability. It is also compatible with most other DREMEL accessories.

Best Jumpsuit

DREMEL Lite 7760-N/10 Cordless Rotary Tool

The DREMEL Lite 7760-N/10 cordless rotary tool has four speed settings from 8,000 to 32,000 rpm. It is ideal for light duty applications (soft or hard wood/metal, stone or glass).

Best Budget: HARDELL Mini Cordless Rotary Tool

HARDELL Mini Cordless Rotary Tool on white background


  • Best for DIY and light use (carving, sanding, sanding, polishing and cutting)
  • Five speeds from 5000 to 15000 rpm with LED light
  • 55 free accessories for various applications


  • Not suitable for heavy work

No matter who you are or where you are, there is a cordless rotary tool for you. If you want to save some money without sacrificing quality, you should get the HARDELL Mini cordless rotary tool. This is our top pick for the best budget cordless rotary tool. It is suitable for carving, grinding, grinding, polishing and cutting, among other things. It is also not recommended for heavy projects.

The HARDELL cordless mini rotary tool has five speed settings from 5,000 to 15,000 rpm for a variety of applications. Powered by a 3.7V battery, this tool can operate continuously for up to 200 minutes on a single charge. It can be charged with USB fast charging. Its built-in LED light helps eliminate shadows and blind spots so you can work safely even in dimly lit areas.

best budget

Best Premium: DREMEL 8240 Cordless Rotary Tool

DREMEL 8240 Cordless Rotary Tool isolated on white background


  • Suitable for DIY, light and heavy duty use
  • Adjustable speed from 5000 to 35000 rpm with LED light
  • Five free accessories for various applications and a wrench


  • Battery life could be better

If you’re on a bigger budget or need more rotary power, choose the DREMEL 8240 cordless rotary tool. It’s our top pick for the best premium cordless rotary tool. Rated at 12V, the DREMEL 8240 has nearly three times the power of the DREMEL Lite 7760. With a variable speed of 5,000 to 35,000 RPM, it can be safely used for light to heavy duty applications including cutting, sharpening/sanding, polishing / cleaning, grinding and drilling, among others.

It takes about 65 minutes to fully charge it until you get a steady full battery indicator. In difficult conditions, it can work up to 10 minutes, and in light conditions – up to 20 minutes. Changing nozzles on the DREMEL 8240 is also quick and easy thanks to the same patented EZ Twist Nose Cap design found on the DREMEL 7760 Lite. Unlike the 7760 Lite, the DREMEL 8240 comes with a wrench and five other accessories.

Best Premium

Best for Creativity: Phalanx RS Mini Cordless Rotary

Phalanx RS Mini Cordless Rotary Tool on white background


  • Suitable for handicraft, DIY and light use
  • Three speed settings from 5000 to 18000 rpm max.
  • 60 free accessories for various applications


  • For light use only

The Phalanx RS Mini cordless rotary tool is a versatile 3.7V cordless rotary tool that will take your work to the next level. With adjustable three speed settings from 5,000 to 15,000 rpm (no load) and 60 different accessories, there’s a lot you can do with this cordless Phalanx rotary tool. This includes drilling, cutting, carving, sanding, polishing, and shaping nails, among others. It is ideal for use in light conditions.

Compact, lightweight and ergonomic design makes it feel like a real pen in your hand. Thanks to the variable speed settings and the included accessories, you can easily turn your blank into a canvas. Its one-touch power button makes it easy to switch speeds and control the device. It also has LED indicators to indicate the change in speed. It’s also carefully engineered to dissipate heat efficiently, extending battery life.

Best for crafting

Cordless rotary tool Phlanax RS Mini

The Phlanax RS Mini cordless rotary tool has three speed settings from 5000 to 18000 rpm. Ideal for all kinds of light crafts.

Best for Professionals: Milwaukee 2460-20 Cordless Rotary Tool

Milwaukee 2460-20 rotary tool on white background


  • Useful for crafts, DIY, light and heavy professional use.
  • Adjustable speed from 5000 to 32000 rpm.
  • Free accessories include a wrench, five cutting discs and a mandrel.

Unlike the Phalanx RS Mini cordless rotary tool, the Milwaukee 2460-20 cordless rotary tool is designed for everyday, home, light and especially heavy professional use. Like most other Milwaukee tools, this 12-volt battery-operated rotary tool has enough power to get the job done. It has a variable speed range from 5,000 to 32,000 rpm (no load) and a variable speed scale that makes it easy for you to tackle any task you are given.

With a 1/8″ collet (compatible with all accessories with 1/32″ and 1/8″ shanks), it can be used for thousands of heavy-duty cutting, grinding, grinding and polishing applications. It comes with a USB charging port that allows you to quickly charge the battery (not included) when needed. It also has dedicated LED indicators that alert you to key features and events, as well as provide backlighting.

Best for professionals

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