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Silver (Ag): Ancient Trade to Modern Tech
Silver is a lustrous versatile transition metal used from Neolithic times to create ornaments. It's known for antibacterial powers, and...
Sylvia Rose
Mar 105 min read
36 views


How to Make an Artificial Intelligence System
Artificial Intelligence (AI) is a world revolution, virtually nonexistent in public use before the 21st century. Knowing how to make an...
Sylvia Rose
Mar 95 min read
14 views


Artificial Intelligence: Technology & Society
Artificial Intelligence (AI) is a powerful force. It enables machines to think and act like humans. From perky virtual assistants and...
Sylvia Rose
Mar 96 min read
25 views


History of China: Ancient Days to Space Race
China is the oldest continuous civilization in the world. Its history spans thousands of years including the Yellow River culture,...
Sylvia Rose
Mar 910 min read
11 views


Mars Curiosity Rover: Success & Longevity
Mars Curiosity Rover is one of NASA's most ambitious projects, hailed as an optimal feat of science and engineering. Far overreaching its...
Sylvia Rose
Mar 84 min read
20 views


Tardigrades (Water Bears): Extreme Survivors
Tardigrades are micro-animals also called water bears or moss piglets, often found in water drops on moss. Known for resilience, they can...
Sylvia Rose
Mar 74 min read
13 views


Plutonium (Pu): Nuclear Weapons & Space
Plutonium (Pu) is a synthetic chemical element known for its potent uses and dangers. A heavy, silvery white metal, it tarnishes to a...
Sylvia Rose
Mar 64 min read
25 views


North Korea (DPRK): Total Control
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a totalitarian regime. The government controls political,...
Sylvia Rose
Mar 67 min read
22 views


Super Alloys in Space Exploration
Super alloys have unique combinations of strength, corrosion resistance and high-temperature stability. Made primarily with nickel,...
Sylvia Rose
Mar 53 min read
18 views


Solar Energy & Nuclear Power in Space
Solar energy and nuclear power are the two major forms of energy in space. Solar panels are familiar on satellites and spacecraft....
Sylvia Rose
Mar 54 min read
32 views


Survival of Bacteria in the Extremes of Space
Bacteria are highly adaptable and many survive in extreme conditions, like high acidity. Some can function in anaerobic habitats....
Sylvia Rose
Mar 53 min read
23 views


De-Orbiting Satellites: Problems & Processes
De-orbiting is the controlled descent and re-entry of satellites into Earth’s atmosphere. Methods include propulsion systems and solar...
Sylvia Rose
Mar 56 min read
15 views


Space Debris: Coping with Dangerous Junk
Space debris is human made. It includes discarded rocket stages, defunct satellites and tiny fragments created by collisions and...
Sylvia Rose
Mar 55 min read
35 views


How Spacecraft Produce Water for Astronauts
Astronauts on long-duration missions rely on water (H2O) for drinking, hygiene, food preparation, and oxygen generation by electrolysis....
Sylvia Rose
Mar 42 min read
30 views


How Astronauts Breathe in Space
Oxygen makes up 21% of the atmosphere. In the vacuum of space there is no atmosphere. Oxygen is created by electrolysis of water, solid...
Sylvia Rose
Mar 33 min read
17 views


Lithium Ion Batteries on Earth & in Space
Lithium-ion (Li-ion) batteries power phones, laptops, electric vehicles, satellites and spacecraft. Rechargeable energy storage devices,...
Sylvia Rose
Mar 33 min read
17 views


Solar Panels & Batteries in Space
Particularly solar panels and batteries help provide reliable power for spacecraft and satellites. Without terrestrial resources, space...
Sylvia Rose
Mar 24 min read
18 views


How Solar Panels Work
Solar panels or photovoltaic (PV) panels are designed to convert sunlight directly into electricity. They're composed of multiple smaller...
Sylvia Rose
Mar 14 min read
51 views


Lithium (Li): Science, Health & Uses
Lithium (Li) is a soft, silvery-white metal. Famous for rechargeable batteries, lithium is important to sectors like health and...
Sylvia Rose
Mar 14 min read
21 views


Zinc (Zn): Technology, Nature & Health
Zinc (Zn) is a transition metal integral to health, environment and technology. It's forged in the crucible of stars through nuclear...
Sylvia Rose
Feb 285 min read
17 views
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