# Key Points from #hplusroadmap IRC Log (June 16, 2009)

• Discussion about city simulation technologies for environmental planning, including models that incorporate rainfall data, soil composition, and geography to calculate water flow and assess impacts of development on aquifers.

• Detailed exchange about building a DIY Scanning Tunneling Microscope (STM) based on John Alexander's design, with specific focus on piezoelectric components and the challenges of measuring microscopic movements (1.4 microns at 9V).

• Health concern raised regarding polyamidoamine dendrimers (PAMAMs), a class of nanoparticles used in medicine that may cause lung damage by triggering autophagic cell death.

• Resources shared on electrical engineering analysis methods, including nodal analysis techniques, Kirchhoff's laws, and reliability prediction software for electronic and mechanical components.

• References to CAM-Brain, ATR's cellular automata-based artificial brain project, which appears to have been an early artificial life/neural network system developed by Genobyte (company noted as defunct).

• Various technical modeling software mentioned, including MapleSim and 20sim, with links to design galleries featuring complex systems like hexapods.

• Discovery of Herminiimonas glaciei, a novel ultramicrobacterium found in 3042m deep Greenland glacial ice, with a link to the research paper.