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A comprehensive lightning rod (or protection) system consists of air terminals, down conductors, bonding, and grounding rods, all designed to safely intercept strikes and disperse electrical energy. While it protects buildings and individual high-value trees from direct fires, deploying a widespread lightning rod network across entire forests is impractical and excessively expensive due to the vast, inaccessible areas involved

Active Status: It is one of only 16 active fire lookout towers remaining in New Hampshire's statewide forest fire detection network. Blue Job Mountain Fire Tower in Farmington, NH is still active. It is officially owned and operated by the New Hampshire Division of Forests and Lands.

Compressing Martian atmospheric CO₂ (ambient ≈ 0.006 atm) to 5 atmospheres requires ≈ 0.23 to 0.25 kWh of electrical energy per kilogram of gas, depending on your compressor efficiency. Assuming an average Martian density, this means about 4.6 to 5.0 kWh are needed to pressurize 1 m³ of this

compressed gas.
Key Details & Calculations
Input Pressure: ≈ 0.006 atm (610 Pa)Target Pressure: 5 atm (506,625 Pa)Compression Ratio: ≈ 833:1Isothermal Compression Energy: ≈ 0.22 kWh per kilogram (ideal minimum).
Real-World Energy Cost: ≈ 0.25 to 0.30 kWh/kg to account for system losses, cooling, and heat rejection.Related In-Situ Processes

Oxygen Extraction (MOXIE & Plasma): NASA's MOXIE experiment split CO₂ into O₂ and CO, achieving energy costs of roughly 0.19 kWh/g of O₂. Advanced cold-plasma microwave reactors can lower this to ≈ 0.013 to 0.04 kWh/g of O₂.

Liquefaction: If you need to compress CO₂ into a liquid state for propellant (like Methalox fuel) or storage, you need to compress it to roughly 60 atm (870 psi) and cool it below 31° C, which requires roughly 0.4 to 0.5 kWh/kg.

Sabatier Process: If combining this CO₂ with hydrogen to produce methane and water, the exothermic nature of the reaction reduces net power requirements, though it is usually tied to energy-intensive water electrolysis to produce the hydrogen.

Are you planning to use this CO₂ for greenhouse pressurization, propellant manufacturing, or an oxygen generation system (ISRU)? Knowing this will help narrow down the exact reactor footprint and total power generation needed.8 sites

Spacenut:

Thanks for the google AI results.  Nice to see it back me up.  Although I gave numbers for cosmic ray exposures and for radiation sickness thresholds,  just in the old US units that I knew and understood.

When I said solar particle events were erratic in intensity,  that was based on an old graph I got off a NASA website many years ago.  The highest-intensity events were rare,  but measured in the 10's of thousands of REM accumulated in an hour.  There was one such in 1972,  between Apollo 16 and Apollo 17. 

The weakest events were not the very most common,  measuring in the hundreds of REM per hour.  Most commonly doses outside the spacecraft were in the few hundred to low thousand REM/hour range.  Apollo capsule hulls knocked that down by about a factor of 2.  Which is not enough shielding for a 1000 REM/hr event,  being a fatal dose even inside the capsule,  in only 1 hour's exposure. Bear in mind these events usually last several hours to a day or so.

The Van Allen belts are particles similar to those of solar particle events,  since most come from the sun and get trapped in Earth's magnetic field.  These belts are intense enough to accumulate a lethal dose if you dawdle around transiting the Van Allen belts,  but they are the same lower energy as solar flare particles,  thus fairly easy to shield.

The figure of merit for such shielding I also got from that same old NASA website many years ago.  It was the 15-20 grams of "something" per square centimeter of surface area.  To protect against something like the 1972 event,  20 gram/sq.cm is more effective than 15,  but you will get a dose over a short time interval.  To meet the old exposure standards,  you need enough shielding to hold that flare dose down to 25 REM accumulated in any given month.  Accumulation = dose rate (REM/hr) times exposure time (hours).

GW

You have to understand,  there are a lot of scientifically-illiterate people "out there".  It goes along with all the other kinds of illiteracy that we all have seen.  Such folk cannot tell lie from truth,  and for many years the lie has been "fatal cosmic radiation". 

Those liars are looking for a scientific-sounding reason not to go out into space,  that's the motivation.  They need one that is not "treatable",  and it is extremely difficult-to-impossible to shield super-high-energy cosmic ray particles.  That's precisely the kind of excuse "not to go" that they are looking for.

They ignore the fact that cosmic ray intensity is entirely non-fatal in its effect,  leading only toward late-in-life cancers,  and even then only when exposed to the very worst intensities!  But the illiterate people they preach to,  cannot absorb that kind of detail.  And THAT is why the liars are still believed,  even after all these years.

They usually also completely ignore the highly-variable solar flare/mass ejection radiation,  which is very directional,  very erratic in intensity,  and very fatal at its larger intensities.  Why do they ignore it?  Because we already understand how to shield against it,  those particles being far lower energy than cosmic ray particles.  It's actually quite similar to nuclear fallout radiation,  which we have known how to shield since about 1945. 

The only "trick" has been figuring out how to do just enough shielding with something lighter than lead.  Turns out 15 grams/sq.cm of "something" might be enough,  and 20 grams/sq.cm of "something" is almost certainly enough,  even for the worst events we have seen. 

That "something" can be almost anything,  and if it is low molecular weight compared to the common metals,  there is very little secondary radiation produced by cosmic rays flying through it.  It would make sense to use as your "something" materials you already must have with you anyway for other reasons,  such as propellants,  food (especially frozen food),  water supplies,  and wastewater treatment volumes. 

There,  I just told you why it is that the radiation naysayers are liars.  Unfortunately,  the truth is beyond an illiterate audience to understand.  And THAT is why this lie-based argument has persisted for decades.

GW

High altitude and microgravity both produce:

Reduced mechanical loading (less ground reaction force; similar to microgravity unloading)

Hypoxia‑driven IL‑6 and HIF‑1α signaling → accelerates bone resorption

Fluid redistribution → similar to ISS headward shift

Endocrine changes → cortisol elevation, altered calcium metabolism

This is why high‑altitude research often informs NASA’s countermeasures.

Peptide chemistry is the study of how amino acids assemble, fold, react, and can be engineered into functional molecules, while peptide biology examines how those molecules operate inside living systems as hormones, signals, antimicrobials, structural elements, or therapeutic agents. The core idea is that peptides sit at the interface between organic chemistry and molecular biology, combining programmable chemical structure with biologically potent function.