The first of two 2020will turn the sun into a glowing “ring of fire” on June 21 (or June 20 depending on your location). People along a narrow band of the world will have the chance to see the rare eclipse firsthand.
An annular solar eclipse happens when the moon is too far away from us to completely hide the sun, leaving a circle of brightness around the moon. That is how it gets the poetic “ring of fire” nickname.
The full annular eclipse will be visible from parts of Africa and Asia. “A narrow stripe from Africa to the Pacific Ocean will see the Moon in front of the Sun (blocking 99.4% of the Sun at its peak in northern India) such that only a bright ring is visible,” NASA said in a skywatching update for June.
Time and Date lets you dial in details for your area, and tells you whether you’re in line for the full eclipse, a partial eclipse or no eclipse at all. A NASA website also shows the eclipse path on an interactive map and lets you zoom in to find a viewing location.
Even if you’re not in the right geographic spot to catch the eclipse in person, you may still be in luck thanks to the Virtual Telescope Project, which livestreams notable celestial events. Eclipse fans in the US will need to stay up late. The Virtual Telescope Project will kick off coverage at 10:30 p.m. PT on Saturday night.
The National Astronomical Observatory of Japan will offer a Japanese-language livestream with its view of a partial eclipse starting at 11:45 p.m. PT on Saturday.
This won’t be the only eclipse of the year. A total solar eclipse is on tap for Dec. 14 for viewers in parts of South America.
Watching online isn’t the same as being there, but it’s still an opportunity to contemplate the wonders of the sun and the moon, and our place in the solar system.
Industry, mild winters clear way for white-tailed deer 'invasion' in Alberta's boreal forest – CBC.ca
Herds of invasive white-tailed deer continue to migrate north in Alberta’s boreal forest — bolstered by milder winters and human development that cuts through the vast wilderness, a new study suggests.
The survey, recently published in the journal Nature, used 62 trail cameras to track the movements of white-tailed deer near Fort McMurray, Alta., over three years.
It’s a “deer invasion,” said Jason Fisher, study author and wildlife ecologist at the University of Victoria.
“They’re all over the landscape,” Fisher said. “They’re expanding their range. And because they’re having these negative effects on the ecosystem, they could definitely be considered invasive.”
The cameras captured more than 141,000 images, and white-tailed deer appeared in 80 per cent of them. The survey makes clear that deer are now, by far, the most prevalent large mammal in the habitat, Fisher said.
“We’re kind of feeling around in the dark. But them being there in the numbers they currently are is definitely new, it’s definitely increased, and it’s gotten a lot worse over the last decade.”
‘Deer don’t really belong in that landscape’
Deer are not native to the boreal forest and their populations are thriving, often at the expense of other species, including fragile populations of woodland caribou, Fisher said.
The deer create imbalances in the natural food chain. The herds compete with other animals, devouring the boreal forest’s limited grazing lands. Their presence also draws more predators such as wolves to the area.
It’s like a caribou, white-tailed deer teeter-totter with wolves as the fulcrum.– Jason Fisher
“The deer don’t really belong in that landscape,” Fisher said. “They’re not evolved to move quickly over snow the way that caribou are, and so they’re easy targets for wolves.
“With all these white-tailed deer around, that’s pushing wolf numbers up. With more wolves around, they’re hitting caribou harder.
“It’s like a caribou, white-tailed deer teeter-totter with wolves as the fulcrum. And that’s the big problem.”
Historically confined to the Eastern Seaboard, deer have been expanding their territory across the continent since European colonization. First they followed farmers, occupying open areas created when land was cleared of trees.
In their move north, they followed humans again, taking advantage of open grazing areas created by seismic lines and other industrial developments that cut through the thick bush.
“As agriculture swept across North America, white-tailed deer have come with it,” Fisher said. “The increase we’re seeing here in Alberta now is basically the continuation of that process. Alberta has had deer in the south ever since we’ve had agriculture. But the move north is a pretty recent phenomenon.”
The study area — 3,000 square kilometres of white and black spruce, aspen, Jack pine and muskeg — is marked by extensive oil and gas development, logging roads, off-road trails and seismic lines. Deer have only been in the area for a couple of decades, Fisher said.
Aerial surveys done by the province provide some information on local populations, Fisher said, but his team wanted to better understand the animals in relation to the weather and the landscape.
According to the thousands of images captured by their cameras, deer were most numerous in areas touched by human development, he said.
During the three-year study, the severity of winter fluctuated. Populations would soar after a mild winter, but even after a “biblical” second winter, herd numbers appeared relatively untouched, he said.
‘This isn’t fully a climate-change problem’
Climate change and landscape change are working in tandem to drive the deer invasion, Fisher said. But the loss of mature forest to oil and gas development in the area is the biggest driver, he said.
The altered landscape has given the animals access to new foraging grounds, allowing them to withstand harsh seasons when they might normally starve, Fisher said.
In an ongoing follow-up study he is overseeing in the Richardson Backcountry, an untouched swath of wilderness north of Fort McMurray, deer numbers are sparse.
With milder winters expected and more development encroaching into the boreal habitat every year, white-tailed deer territory will only continue to grow, Fisher said.
“This isn’t fully a climate-change problem,” he said. “As long as there is ongoing disturbance in the landscape without restoration, then the white-tailed deer are going to be there.”
Lunar Eclipse July 2020: Date, Timings, and How to Watch Live Stream – Gadgets 360
July 4 will mark the third lunar eclipse for 2020. People in certain regions will be able to witness penumbral lunar eclipse, also being referred to as a “buck moon” lunar eclipse. It also coincides with the US Independence Day which is good news for US residents as they are among the people who will get to witness this celestial phenomenon. The first lunar eclipse of 2020 was in January, followed by the second in June, making it the third lunar eclipse for the year. Unfortunately, people in India will not be able directly see the eclipse.
Lunar eclipse July 2020: What is a penumbral lunar eclipse?
A penumbral lunar eclipse (upchaya chandra grahan in Hindi) is when the Earth blocks some of the Sun’s light from directly reaching the Moon and the outer part of the Earth’s shadow, called the ‘penumbra’, covers all or part of the Moon. This type of eclipse is harder to spot as the penumbra is fainter compared to the dark core of the Earth’s shadow called ‘umbra’. Because of this, a penumbral lunar eclipse is sometimes mistaken as a full Moon.
As per NASA, as there will be a full moon at 12:44am EDT on July 5 (10:14am IST on July 5) and will be the first full Moon of summer (US), the Algonquin tribes used to call this full Moon the Buck Moon.
When will the lunar eclipse occur?
As per data by TimeandDate, the lunar eclipse will start at 11:07pm EDT on July 4 (8:37am IST on July 5) and reach its peak at 12:29am EDT on July 5 (9:59am IST on July 5). It will last for 2 hours and 45 minutes after which the lunar eclipse will end at 1:52am EDT on July 5 (11:22 am IST on July 5).
Who will be able to witness the lunar eclipse?
Unfortunately, this lunar eclipse of July 4-5 will not be visible in India. However, people in much of North America, South America, South/West Europe, much of Africa, Indian Ocean, Pacific, Antarctica, and Atlantic will be able to witness it.
How to watch the July 2020 lunar eclipse?
The penumbral lunar eclipse, and other such celestial events are often streamed on popular YouTube channels including Slooh and the website Virtual Telescope. If you live in one of the regions where this lunar eclipse will be visible, you should be able to watch it without any special equipment.
WWDC 2020 had a lot of exciting announcements from Apple, but which are the best iOS 14 features for India? We discussed this on Orbital, our weekly technology podcast, which you can subscribe to via Apple Podcasts, Google Podcasts, or RSS, download the episode, or just hit the play button below.
B.C. white throated sparrows become trend setters: 20 year study finds birds change tune – CKPGToday.ca
Researchers say they still don’t know what made the new song so compelling to the sparrows mentioning that it is well known that some bird species change their songs overtime but that they usually tend to stay in local populations.
“When I first moved to Prince George in British Columbia, they were singing something atypical from what was the classic white-throated sparrow song across all of eastern Canada.”—Ken Otter, UNBC Professor
In the 1960’s white-throated sparrows across the nation whistled their song which at the time ended in a repeated three-note triplet but come the 1990’s the song had already changed in western Canada, according to Otter.
Otter and his team utilized a large network of citizen scientist birders across North America who had uploaded recordings of the white throated sparrow songs online to track the new ending. Their findings showed that the song wasn’t just popular west of the Rocky Mountains but was spreading quickly east.
“Originally, we measured the dialect boundaries in 2004 and it stopped about halfway through Alberta.”—Ken Otter, UNBC Professor
“By 2014, every bird we recorded in Alberta was singing this western dialect, and we started to see it appearing in populations as far away as Ontario, which is 3,000 kilometers from us,” said Otter.
Otter says that they believed perhaps overwintering grounds were the reason for the song change. “We know that birds sing on the wintering grounds, so juvenile males may be able to pick up new song types if they overwinter with birds from other dialect areas. This would allow males to learn new song types in the winter and take them to new locations when they return to breeding grounds, helping explain how the song type could spread,” Otter says.
Further research found that the overwintering grounds did in fact play a part to the change in tune and that the original tune was completely being replaced by the sparrows new tune.
“In white-throated sparrows, we might find a situation in which the females actually like songs that aren’t typical in their environment. If that’s the case, there’s a big advantage to any male who can sing a new song type.”—Ken Otter, UNBC Professor
Otter and his team are curious to find out if the new tune may be preferred by female birds used to the three note ending song. Otter says that now a new song has appeared in another western sparrow population and are excited to see if this tune to takes over the country.
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