Often pulled out in Aztec sacrificial rituals, this human organ is found posterior to the sternum in the thoracic cavity.
What is the heart?
This device scans radio FM and AM wavelengths at rapid speeds picking up fragments of audio. Ghost hunters will tell you the sounds it makes indicates paranormal activity.
What is a Spirit Box?
This engineer first proposed a "world wireless system" transmitting signals with the Earth and Atmosphere as a conductor.
Who is Nikola Tesla?
The name for a baby elephant
What is a calf?
This 2017 research paper was fundamental in developing our current understanding of AI Large Language learning Models and has since been cited over 60,000 times in other papers.
What is "Attention is All You Need" (Vaswani A, Et. al).
In hydroelectric dams, this device steps up the voltage before energy enters the electrical power lines.

What is a transformer?
Some people find insects scary, but taxonomically one of these is not at all an insect someone should fear.
Rolypollies, Inchworms, Silverfish, Dragonflies
What is Rolypollies?
The phenomenon of smoke from a tunnel fire moving upstream against air flow ducts and creating a dangerous black plume.
What is Smoke Backlayering?
From Earth a celestial body’s brightness in the night sky is measured with the unit “apparent magnitude” which follows a logarithmic scale. If Saturn is 0.41, and Uranus is 5.61, would 7.00 best approximate the Sun, the full Moon, or a star?
What is a star?
The term for animals that are most active during twilight
What is Crepuscular?
The color of the hexcode #B00000
What is Red?
This device modeled below by a circuit diagram is used to adjust Direct Current (DC) power supplies with an output voltage range of 1.25-37 Volts and a max output current of 1.5 Amps.

What is a LM317 Voltage Regulator?
The Hetch Hetchy project maintained by the SF Public Utilities Commission (SFPUC) pipes fresh tap water directly from Hetch Hetchy Reservoir in the Tuolumne Valley of Yosemite to multiple Bay Area reservoirs including Crystal Springs Reservoir serving San Mateo County. On the way down the Sierras, water will finally flow through this last major hydroelectric powerplant of the Hetch Hetchy Project before reaching the Central Valley and Bay Area.
What is the Moccasin Powerhouse?
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