With the continents all drifting this way and that, what happens when one of them gets to the edge? Do they just kinda fall off like a cat playing with a tea cup on desk?
What do you think happened to Atlantis?
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I thought maybe what is now subarctic could have been at much lower (subtropical) latitudes millennia ago.
Northern Canada was about where Florida is now plus average global temperatures estimated to be around 10°C higher when the Dinosaurs met their demise.
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The world map was broadly similar to todays back in early Eocene times (55 Ma) where the sediments in the referenced article are dated to. You have to go back a further ~200 million years before parts of Canada were physically in the tropics.
It is thought there was a big release of methane from seabed methane clathrates that put the globe into a strong greenhouse situation. Global temperatures were cooler before that event and cool again by the late Eocene.
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Northern Canada was about where Florida is now plus average global temperatures estimated to be around 10°C higher when the Dinosaurs met their demise.
Not correct on the first point. The geographic center of Canada was slightly north of where it is today.
Check your map when the counter is at 66 for the how things looked on dino dead day (year/decade).
The world map was broadly similar to todays back in early Eocene times (55 Ma) where the sediments in the referenced article are dated to. You have to go back a further ~200 million years before parts of Canada were physically in the tropics.
It is thought there was a big release of methane from seabed methane clathrates that put the globe into a strong greenhouse situation. Global temperatures were cooler before that event and cool again by the late Eocene.
Very much this. Since the Cretaceous, North America has been pretty stationary in terms of latitude. What has changed is temperature which impacts sea levels and glaciation which has an impact on continental loading and isostatic rebound.
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Scientists have found new but tentative evidence that a faraway world orbiting another star may be home to life.
A Cambridge team studying the atmosphere of a planet called K2-18b has detected signs of molecules which on Earth are only produced by simple organisms.
This is the second, and more promising, time chemicals associated with life have been detected in the planet's atmosphere by Nasa's James Webb Space Telescope (JWST).
But the team and independent astronomers stress that more data is needed to confirm these results.
The lead researcher, Prof Nikku Madhusudhan, told me at his lab at Cambridge University's Institute of Astronomy that he hopes to obtain the clinching evidence soon.
"This is the strongest evidence yet there is possibly life out there. I can realistically say that we can confirm this signal within one to two years."
This may not be habitable planet level of importance, but I'd say it's more impactful for our lives...anytime we find ourselves in a murky body of water. I would have been happier not knowing such a thing existed:
Had no idea Gar were anywhere outside of South America.
I was surprised to learn a little while ago that they can be found as far north as Lake Erie, Lake Ontario, and the St. Lawrence River as well. They aren't the alligator gar in the posted story (which range as far north as Illinois), but the smaller longnose gar which still look pretty menacing.
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London woman off insulin for Type 1 diabetes after a single dose of experimental manufactured stem cells
Amanda Smith celebrates the day, August 1, nearly two years ago, when she stopped taking insulin to manage her type one diabetes, just a few months after getting a dose of experimental stem cells as part of a study.
“It’s a big advance” he added.
But there’s a tradeoff. The patients, however, require immune-suppressing drugs for life, so that the immune system doesn’t destroy the cells.
There are risks to these immunosuppressive medications, including a higher risk of some cancers, infections, and high blood pressure. Amanda says it is nothing like her constant terror that she might slip into a sudden diabetic coma.
“Taking a couple of pills three times a day is nothing. I take it with breakfast, lunch, and dinner. It’s easy. No comparison, none,” she said. “And I know it’s a huge relief for my family, especially my husband, that’s for sure.”
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The Krasheninnikov Volcano erupted for the first time in 500 years possibly triggered by the 8.8 magnitude earthquake last wednesday. The eruption threw ash 6 km into the atmosphere and triggered a 7 magnitude earth quake. There's a possibility that this is a precurser to a larger eruption.
Krasheninnikov is in remote Easter Russia but is part of the Pacific Ring of fire. There's a possibility that we might see some ash affects in Alberta later on in the week.
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Earth’s Core Appears To Be Leaking Up and Out of Earth’s Surface
A longtime assumption of geoscientists is that the boundary between the mantle and the outer core is clear and severe. After all, lighter mantle rock should essentially float atop the denser metallic core. But a recently published pair of studies tells a surprising story, one that was already suspected: Earth’s core is leaking material. This stuff is making its way right up to the surface, potentially ferried through two monster-size blobs sitting at the core-mantle boundary.
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