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seamac3

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Laser satellite weaponry is already here. It wouldn't matter if DARPA undertakes this project or someone else. I think it's still a good idea, if it can deliver energy cheaper than building, maintaining, and running a ground infrastructure. It could potentially lead to greater energy security. I just imagine satellites powering individual city blocks or segments, right along with remote villages. I wonder what the radiation effect is from energy delivered by laser...

How will we know the effects and timing (permanence) of injecting the stratosphere with aerosols that block out solar radiation? Is it localized (how will such gases stay over particular areas such as the poles), because gases expand indefinitely...right? How would we control these aerosols so the earth doesn't get too cold?

I think it seems like a good idea, and I'm sure there are experts that could answer these questions.

I give the Whitehouse kudos for proposing such an initiative, at least through research we will know more about what is possible and the effects of such actions.

The paper provides a great overview of how to achieve a more sustainable earth. Hopefully these actions could be consistent over the long term.

I've got a RTL SDR on order, and I plan on using it with SDR#. Mainly I will be exploring the radio airwaves, seeing what's out there. I just wish there was an inexpensive SDR that would also transmit, especially for amateur radio frequencies.

Yes, the reason I'm asking is because I've got a Baofeng too, which is a lot of fun to listen in on, yet there are so many more frequencies out there. I was thinking about a hackrf with a "ham it up". I seems like SDRs are an inexpensive way to hear what is out there. https://greatscottgadgets.com/hackrf/one/

Meshtastic looks interesting. Is this a way to create a sort of private long range communication on unlicensed frequencies?

"The invention involves two electrodes and a thin layer of material, which must be covered with tiny holes less than 100 nanometers in diameter—thinner than one-thousandth the width of a human hair, according to a statement from the University of Massachusetts, Amherst, where the researchers work.

As water molecules pass through the device, from an upper chamber to a lower chamber, they knock against the tiny holes’ edges, creating an electric charge imbalance between the layered chambers. In effect, it makes the device run like a battery. The whole process resembles the way clouds make electricity, which we see in the form of lightning bolts." https://www.smithsonianmag.com/smart-news/this-new-device-ge...

This article taught me a lot about Rastafarianism. I grew up knowing the California version. I thought it was all about smoking weed, reggae, and dreds. It is actually a spiritual, old testament influenced religion. It seems that now-a-days there is an entire spectrum of types of Rastas though. Interesting article.