New AI supercomputer will help create the largest-ever 3D map of the universe


A new AI supercomputer, Perlmutter, is powerful enough that it will be used to help make the largest-ever 3D map of the universe.

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The SolarWinds hackers aren’t back—they never went away

"And people reliably click on these emails? Really?"

Enlarge / “And people reliably click on these emails? Really?” (credit: Kremlin official photo)

The Russian hackers who breached SolarWinds IT management software to compromise a slew of United States government agencies and businesses are back in the limelight. Microsoft said on Thursday that the same “Nobelium” spy group has built out an aggressive phishing campaign since January of this year and ramped it up significantly this week, targeting roughly 3,000 individuals at more than 150 organizations in 24 countries.

The revelation caused a stir, highlighting as it did Russia’s ongoing and inveterate digital espionage campaigns. But it should be no shock at all that Russia in general, and the SolarWinds hackers in particular, have continued to spy even after the US imposed retaliatory sanctions in April. And relative to SolarWinds, a phishing campaign seems downright ordinary.

“I don’t think it’s an escalation, I think it’s business as usual,” says John Hultquist, vice president of intelligence analysis at the security firm FireEye, which first discovered the SolarWinds intrusions. “I don’t think they’re deterred and I don’t think they’re likely to be deterred.”

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How to Make an Indicator Using Hibiscus Petals

If you’re looking for a fun science experiment to do at home, making an indicator solution might be the perfect project. By mixing dried hibiscus leaves and water, you can make a cheap and sensitive chemical indicator for bases and acids in just a few minutes. After that, you can go wild with testing household items to see where they fall on the pH scale.


[Edit]Combine your dried hibiscus petals with water.

  1. You’ll need around 2 to 3 grams of dried hibiscus petals. Place your petals in a 150 mL beaker along with 50 to 60 mL of water to start. The water won’t change colors just yet, so hang tight![1]
    Make an Indicator Using Hibiscus Petals Step 1 Version 2.jpg
    • If you gathered your own hibiscus flowers, gently pluck off the petals and spread them out on a paper towel. Leave the petals in the sun for 2 to 3 days until the leaves look crispy and slightly brown.

[Edit]Boil the mixture for 3 to 5 minutes.

  1. You can use a Bunsen burner or a hot plate. Place your beaker onto the burner, then turn it up high. Get the water boiling for about 5 minutes until it starts to turn dark red.[2]
    • No need to stir your mixture—just sit back and relax.

[Edit]Cool the mixture for 5 to 10 minutes.

  1. Turn off the burner and let the mixture sit. This will allow all the sediment to settle at the bottom of the pot. You can use this time to ready the rest of your equipment, like a clean beaker and a few test tubes.[3]
    Make an Indicator Using Hibiscus Petals Step 3 Version 2.jpg
    • If you pour the liquid too early, you might end up with a chunky, lumpy indicator.

[Edit]Pour the liquid into a clean beaker.

  1. Try not to disturb the petals at the bottom of the liquid. Gently pour the liquid into a clean 100 mL beaker, separating it from the petals. If you’re having trouble, set a strainer on top of your beaker and strain the liquid instead.[4]
    Make an Indicator Using Hibiscus Petals Step 4 Version 2.jpg
    • The liquid will be a deep red color, but you should still be able to see light shining through it.

[Edit]Mix your chemical with water in a test tube.

  1. Pick out the substance you’d like to test with your hibiscus solution. Add around 1 tsp (5.6 g) of it to the bottom of a test tube, then add 4 to 5 mL of water to the tube with a dropper. Cap the test tube with your finger and shake it up to dissolve the substrate in the water.[5]
    • The substance you choose is up to you, but people often use salt, window cleaner, orange juice, apple juice, or toilet bowl cleaner.

[Edit]Add 4 to 5 drops of hibiscus indicator to the tube.

  1. Put your indicator to the test! Use a dropper to add 4 or 5 drops of hibiscus water to the test tube. You’ll notice a color change right away as the hibiscus petals interact with the chemical.[6]
    • Hibiscus flowers contain the colour pigment anthocyanin, which is a natural chemical indicator.

[Edit]Check the color change of the water.

  1. The color change will tell you if it’s acidic or basic. The pH scale ranges from 0 to 14. A pH of less than 7 indicates acidity, while a pH of more than 7 indicates a base. Anywhere from dark pink to pale pink usually indicates an acid, while dark gray to green colors usually indicate a base. The rest of the colors indicate:[7]
    Make an Indicator Using Hibiscus Petals Step 7.jpg
    • Dark pink: pH 2
    • Pink: pH 3 to pH 4
    • Pale pink: pH 5
    • Lavender: pH 6
    • Gray: pH 7 or pH 8
    • Dark gray: pH 9
    • Brown: pH 10 or pH 11
    • Green: pH 12


[Edit]Things You’ll Need

  • 2 to 3 grams of dried hibiscus petals
  • 150 mL beaker
  • Bunsen burner or a hot plate
  • 100 mL beaker
  • 1 tsp (5.6 g) of a chemical of your choice
  • Test tube
  • Dropper

[Edit]Related wikiHows


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Tesla’s New Autopilot Update Uses the In-Car Camera to Spot Distracted Drivers

Tesla’s Autopilot system has been subject to heavy criticism this year, and you’ve probably seen the YouTube and TikTok videos of people abusing it. However, it looks like the latest update to autopilot is finally using the in-car camera for driver monitoring.

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Twitter Accidentally Confirms Subscription Service with “Undo Tweet” Button

It looks like Twitter is getting ready to launch its rumored subscription service. App researcher Jane Manchun Wong discovered and tested a $3 per month “Twitter Blue” in-app purchase on Twitter’s App Store page, revealing exclusive features like an undo Tweet button, a reader mode for long threads, and more.

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How to Password Protect Your Google Search History

It’s no secret that Google tracks your activity in its products, but you have some control over your information. This data can be automatically wiped clean, and it can be put behind a password to protect it from prying eyes.

Read This Article on How-To Geek ›

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How I set up a self-hosted replacement for Google Photos

Synology Photos is a free Google Photos clone, but you’ll need hardware to host it

With Google Photos discontinuing free unlimited photo backups starting next week, we’ve been taking a look at the various alternatives available on the market to replace the service. Both options we’ve looked at so far — Amazon Photos and Microsoft OneDrive — are cloud-based lockers, so today we’re going to take another approach and check out a local storage alternative. Synology, the maker of the famous home NAS servers, has been testing its own photos management library for a while and in my experience, it’s as close to Google Photos as you could ever get.

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How I set up a self-hosted replacement for Google Photos was written by the awesome team at Android Police.

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