There's a total solar eclipse on April 8. Here's why you need to wear glasses to safely look at it — and what happens if you don't. - Yahoo Life | Canada News Media
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There's a total solar eclipse on April 8. Here's why you need to wear glasses to safely look at it — and what happens if you don't. – Yahoo Life

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Here’s how to protect your eyes ahead of the solar eclipse on April 8. (Getty Images)

A total solar eclipse is coming to many parts of the United States, Mexico and Canada on April 8, prompting a rush of travel plans by people hoping to get in the phenomenon’s path and see the spectacle. But experts are sounding the alarm: Safety first, solar eclipse second!

Staring at the sun can cause potentially permanent damage to your eyes and vision — yes, even if the moon is covering it. Here’s what to know about watching the solar eclipse, from the best ways to protect your vision to the extra precautions parents should take to protect children’s eyes during this major celestial event. According to NASA, the next total solar eclipse visible from the contiguous U.S. won’t be until 2044 — so you’ll want to do this one right.

???? What can looking at a solar eclipse do to your vision?

Looking directly at the eclipse can do the same damage to your eyes as looking directly at the sun on a perfectly clear day. What makes an eclipse a more dangerous time for eye injuries, though, is that the sky and the surroundings will look dark during it. In reality, the sun’s ultraviolet (UV) rays are every bit as powerful from behind the moon.

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“If you go outside and look at the sun, it’s very bright, and you can’t do it for long,” Dr. Ronald Benner, president of the American Optometric Association (AOA), whose private practice is in Laurel, Mont., tells Yahoo Life. “But when we have a solar eclipse, the moon in front of the sun darkens it, so people are going to be pretty tempted because it’s not as harsh. But the problem is that you’re still getting high-intensity UV light that can burn and scar the retinal tissue.”

That can cause an injury known as solar retinopathy. The retina plays a crucial role in vision. It’s a highly light-sensitive layer of neural tissue that surrounds the back of the eye, connecting to the optic nerve and processing visual information.

Eclipse or not, when you look straight at the sun for an extended period, its UV radiation has a straight shot to the retina, “which is brain tissue,” cautions Benner. “Once brain tissue is damaged, it’s damaged.”

But it’s usually not painful right away. It might take two to three days before you feel the effects, which might include altered color vision, seeing spots or having blotchy vision, which may be permanent. Because there’s a delay in both pain and vision loss from staring at a solar eclipse, it is not really known how common this is, but Benner says he’s met a number of adults with the condition.

Unfortunately, there isn’t much that can be done after the eye is damaged from looking at a solar eclipse. “We don’t have great treatments,” Dr. Nicole Bajic, an ophthalmologist with the Cleveland Clinic, tells Yahoo Life. “People have tried steroids, but the data on that isn’t good. It’s more of a ‘tincture of time’ — if it’s going to improve with time, it will, but for others, it does not.”

???? How can you safely watch the solar eclipse?

There’s really only one “do” for watching the solar eclipse, and lots of don’ts. The most important must-do is to watch through solar eclipse glasses. These are specially designed spectacles that are thousands — yes, thousands — of times darker than regular sunglasses, according to NASA.

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Eclipse glasses have an ISO (a metric of sensitivity to light) of 12312-2, and real ones will be marked with that number. “If glasses are not stamped with that, they’re not approved for watching the eclipse,” Benner says. “And even if they are, you still want to make sure that they are from a reputable source.”

Scammers often sell fake glasses in the lead-up to eclipses, which can lead to permanent eye damage. The best way to be sure you’re getting the real thing is to buy them from the American Astronomical Society’s (AAS) list of solar viewers and filters. If your glasses are the real deal, they will be very dark. Benner says that if you can put them on in your home and see a light that’s on, they’re not approved solar eclipse glasses.

Once you have approved glasses, you still need to use them correctly. When you go outside to see the eclipse, be sure to keep your head down, then put on your glasses and make sure they’re well positioned and secure before you look up to see the eclipse.

“You don’t want to look up and say, ‘Where is it?’ then put the glasses on,” Benner says.

Other don’ts: Don’t use regular sunglasses, double sunglasses, welding glasses, binoculars or telescopes to look at the eclipse. You also don’t get protection from a camera or a smartphone camera. If you want to photograph the eclipse, you’ll still need to wear eclipse glasses and fit your lens with a special filter, also available from the AAS list. You can buy or make solar optical projectors, including pinhole cameras, but be sure you follow instructions from the AAS.

???? Take extra care with kids.

As exciting as a solar eclipse might be to your kids, keep in mind that they may not fully understand the risks of looking at the solar eclipse without protection, and the consequences could be with them for life. According to the AAS, the majority of people who sustain eye injuries during the eclipse are children and young adults.

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“You can put the approved glasses on them, but make sure kids understand the rules,” says Benner. Several of the companies listed on the AAS’s website sell children’s solar eclipse glasses, which will ensure a good fit and that your kids’ eyes are securely covered.

But Benner and Bajic say parents need to be really honest with themselves about their children’s behavior. Young kids may not understand rules and consequences well; some may be prone to rule-breaking, and those with conditions like autism may have a harder time keeping the glasses on and following precautions. “If you don’t think they’re going to follow the rules, don’t take them out — be safe, not sorry,” adds Benner.

Bajic echoes Benner’s warning, and adds a reminder of a cardinal rule with kids: “The last thing you want to tell them is, ‘Don’t look up at the sky,’” because that often just makes a child want to do exactly the opposite.

Also, since April 8 is a Monday, kids may be at daycare or school then, in which case parents should speak with their child’s teacher or child care provider about plans for the day. Will kids be let outside for the solar eclipse? Will glasses be provided? Now’s the time to get details and raise any concerns about how your child might respond.

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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