sci_prog

For a second I was wondering why don't they just apply the same technique on humans and train their model that way instead... that's when I remembered that it involves sticking electrodes into one's brain to get the necessary data. What are the chances that we'll be able to read the brain activity noninvasively (thorough the scull) and at detail great enough to achieve similar things?

Thank you for these!

I never implied that the loss of satellite = loss of power and water. I'm just saying that even a smaller solar flare (Compared to the Carrington event) cause large disturbances. Look at the 1989 that left Quebec and millions without power for 9 hours. Now imagine an entire country/continent losing power almost simultaneously.

I wonder if there's a Paleo-proxy or some kind of natural record that could be used to trace the frequency and magnitude of these events throughout Earth's geological past and if anyone is looking into it? For example we can look at the ocean sediments (usually by measuring changes in isotopic ratio of different compounds) and infer a great deal on temperature, carbon cycling, polar reversal, ocean circulation, chemistry etc. going back millions of years. It would be really neat and helpful if we discovered a proxy that we could use to trace solar flares hitting earth.

How about the effect on all the satellites? I think th Carrington event size one would be catastrophic in the modern day. Imagine large urban areas going losing power for days or weeks. No electricity and no running water. Pretty scary stuff.

Kurzgesagt has a nice and objective summary on the topic. If I remember correctly, 50% chance of a big one hitting us over the next 50 years (or by 2050, can't remember exactly): https://youtu.be/oHHSSJDJ4oo

I used to dream a lot and then it all stopped, especially when the pandemic started and I became less physically active. Long story short, It turns out I have a severe sleep apnea and it became more pronounced when my physical activity went down significantly (aka I was less tired). Few days later after i started using my CPAP machine my dreams came back. Make sure you don't have sleep apnea, about 7-8% of people have it.

I've been wondering for a while why they haven't done this yet. It would probably make millions of users jailbreak their iPhones. It would be a big f u from epic to apple.

Another shameless plug, my girlfriend and I created an online multiplayer game during the first lockdown. The game was inspired by an instagram filter that was trending at the time. We've had over 12k unique users so far.

https://gibberishgame.com

The game was made in unity. The service used for the multiplayer portion is called photon.

I had mine approved in April (it took 6 months) and I self-filed (no lawyer involved) but I used an online template I bought from a couple who went through the process several years ago (https://www.eb2niw.com/). I am not affiliated with them in any way. You will definitely need letters of recommendation but most importantly you will need to show that you are better than the majority of you peers. For example, you could show how well your work is cited compared to others in the same field. You being a P.I. on a federal grant is a huge plus and I think that already increases your chances significantly. As far as J visa situation goes, I think it's possible to get a waiver but I'm not a lawyer and I was on H1B when I applied so can't speak of it.

This story truly resonates with me as I am also first generation. I came to USA on my own, with $700 in my pocket and a partial athletic scholarship (played a D1 team sport). After I finished my undergrad and the sports were gone (in an organized form at least) I also struggled a bit. Unlike you, I made that step and got into grad school. That was probably one of the best decisions I've ever made (even though it didn't feel like at the moment). The main reason I've managed to accomplish everything in my life was primarily because of being involved in sports and being competitive in anything that I do, whether it is sports, academia, work or anything else. I believe that a healthy dose of competitive drive is what makes you a better self as you always strive for improvements. It certainly made me a better athlete and a better student.

Another thing that you mentioned is that you fell off the track a bit and you are never going to be in the shape you were in college. Trust me on this one, you'll hit your prime between 28 and 32 years old. That's when you could potentially be your strongest and fastest. And staying in shape is a lot easier than getting in shape. I was lucky that my grad school allowed me a lot of flexibility and I was still able to play my sport on a semi-professional level even after college. Try to find a group/community of like-minded people who share your passion for running. That will be your "hobby" and will fulfill multiple things that you are missing in life at the moment (e.g. staying in shape and competing).

Having said that, my "quarter life crisis" (or one third life crisis if you will) is kicking-in harder this this time around as I am in my mid 30s and my athleticism is slowly going away. Being in the middle of pandemic is not helping either. I used to be extremely agile, with a 40" vertical jump but this has been on a steady decline due to age and mileage and all the restrictions imposed on sports and gatherings. Still learning how to deal with it.

I would argue that our ability to predict the future is pretty good but our ability to react to/prevent an event from happening is next to nil. Pick any: large solar flare, mega volcanic eruption, climate change, asteroid collision...

There are but they operate over really long time periods, tens to hundreds of thousands of years. The balance is naturally restored through an increase in weathering rates (which are a function of of the CO2 concentration in the atmosphere). The rate at which we are pumping carbon is unprecedented for at least the past 66 million years. There's no natural mechanism which could restore the balance fast enough. I have a PhD on this topic, I investigated climate change and climate evolution in deep geological times in order to find a proxy to what's happening today. The closest thing that ever happened in the past 66 million years is the PETM (see my other comments in this thread). I'll be glad to any questions that you might have.

Just realized I didn't answer all of your questions. The sea level was likely 50 to 100 meters higher than today: https://pdfs.semanticscholar.org/db73/f8e134ab32476aa08b3c05...

It was really warm, not sure on the exact number off the top of my head but at least 10-15 degrees C warmer in high latitudes than today. It was essentially an ice free world. And during the PETM event itself, the temperatures rose another 5 to 8 degrees C: https://dspace.library.uu.nl/bitstream/handle/1874/385777/Ex...

Yes, there are likely many tipping points, some which we are aware of, and possibly some that we cannot even predict, which could cause a positive feedback. Once the tipping point is reached, the earth-system response might be highly non-linear, kind of scary to think about.

Please check my reply to echelon. But here is one of my papers where we show that methane hydrate hypothesis seems to be the most plausible reason for the PETM warming: https://www.soest.hawaii.edu/oceanography/faculty/zeebe_file...

Please check my reply to echelon.

In short, there was no major extinction (nothing like what happened during the end-Permian), some slow adopting benthic (deep ocean species) went extinct, however. The reason there was no major extinction was mostly due to the fact that the warming happened over a span of thousands of years. What we are doing to earth today is happening at a rate at least an order of magnitude faster than during the PETM (see the nature geoscience article I linked below), likely even faster. That wikipedia page has a good summary but here is Jerry's detailed scientific paper on this topic: https://www.diva-portal.org/smash/get/diva2:469826/FULLTEXT0...

This is my PhD adviser's paper. It is best to date estimate on the rate of carbon emissions during the PETM: https://www.soest.hawaii.edu/oceanography/faculty/zeebe_file...

Yes we do, but it's only a hypothesis. This was part of my PhD dissertation and one of my committee members is the world's expert on this topic. His name is Gerald (Jerry) Dickens. We believe this happened approximately 55 million years ago during an event called the Paleocene Eocene Thermal Maximum (PETM), an extreme global warming event. I've published a couple papers on this topic.

The way this works is, we run a computer model and try to come up with a scenario which matches the observations from that time period the best. And seems like the extreme warning that happened during the PETM was likely due to methane hydrate dissociation. I can link a few scientific papers if anyone is interested.

Veritasium has a good, relatively recent video on this topic: https://youtu.be/QRt7LjqJ45k

schadenfreude

No, climate change works in both directions. It causes extremes in both directions. Source: I have a PhD in Oceanography with focus on climate modeling

Wow! Thanks for noticing this. It is brilliant! Now just gotta think of a project where I could use this ha!

Do you maybe have instructions on how to set this up on my own server/domain? I've looked at the code but I'm not familiar with Vue. I have an online webgl multiplayer game where I create random room names to connect players. It would be amazing if I could use my domain and the same random room to enable video chat among the players.

It's Diamond Head

Girlfriend and I made an online multiplayer game https://gibberishgame.com

To kill boredom (ours and hopefully yours) and keep us sane and distracted from the current situation we are all in, my girlfriend and I developed a fun little online multiplayer game (desktop only for now). You will need at least one fun friend and a video/voice chat of your choice to enjoy the game. The rules are listed on the website.

We struggled with the page design, so could use some input. Any feedback would be much appreciated.

Great job! I live in HI (top 4 states according to the website), it looks like they are gonna start loosening up restrictions in a couple of weeks. It will be interesting to see how Rt evolves after that. There's a couple of states where Rt started increasing again after some time (e.g. WA).

Just read Carlo Ravelli's book The order of time, highly recommend. It argues that the change in entropy is the only equation of fundamental physics that knows any difference between past and future. It's the equation for time's arrow.

Are you me? Jokes aside, taking a break from the media helped a lot. I've come to a conclusion that no comment on reddit can be trusted because I wouldn't be surprised if the foreign countries spreading misinformation, trying to create more chaos in the States.