Your link references a single study of 18 research participants who were male, exercised exactly once or twice per week, and were between the ages of 18 and 40.
It's an interesting result, but it hardly "refutes" the hundreds of larger studies that show the opposite result.
The most likely thing is that this paper is just a complete anomaly though. It'll be interesting to see if anyone else ever replicates this result, or does so in a more representative participant population.
School buses are not the same thing as regular buses. They have flashing lights and extendable stop signs to make temporary safe road crossings for children.
If you want to read how horrible and scary the status quo is, just look at any scientific projection of current trends in 10 or 50 years.
> corporations and governments will just rely on this instead of also reducing CO2 emissions
They already rely on people wanting cheap gasoline and cheap beef and high profits to the companies that give generous political donations. So, no change in actual behavior.
Geo-engineering is already happening and has been for decades. It's just been as a side effect of industry. Doing a little bit of intentional work to counteract that is a reasonable response. Hoping that tomorrow everyone wakes up and decides to do the right thing about emissions is a fantasy.
Deportation numbers can be highly misleading because of changes in how border interactions were recorded. There have been changes at various times to count as a deportation turning someone back at the border, or to count it as a refusal of entry.
Deporting 100 people working at a factory has a different economic impact than deporting 100 people at the moment they were trying to cross the border.
And other people said the Internet was a fad and a bubble and cell phones were just for people who wanted to look important and solar panels would never work.
History is full of people making wrong predictions in both directions about new technology.
As the most obvious parallel, pets.com went bust in the first dot com bust and so did webvan. Today chewy is successfully replicating pets and ordering groceries online for delivery is common.
We might see 1,000 different AI companies go bankrupt in the next few years, but still have AI be a huge chunk of the economy throughout the 2030s.
Most people would think working on AI models for computer vision problems is a perfectly reasonable outcome for a STEM PhD, even if it's not a direct continuation of the thesis research.
Turning a physics PhD into any sort of modeling, statistical analysis or engineering work is pretty normal in the US. I wouldn't be surprised if there are more physics PhDs working in finance than academia and government research labs.
It's an interesting result, but it hardly "refutes" the hundreds of larger studies that show the opposite result.
The most likely thing is that this paper is just a complete anomaly though. It'll be interesting to see if anyone else ever replicates this result, or does so in a more representative participant population.