A map of human knowledge you can walk
Every concept is broken into what it's made of (Composition), how it relates (Connection) and how it evolves (Change). Start at a root or search; on any concept, step up to the general, across to peers, or down to the specific.
One concept, three parts
Physical
Mount St. Helens
Mount St. Helens is an active stratovolcano in Washington whose 1980 eruption blew out its side and lowered its summit.
Composition what it's made of
- Stratovolcano cone
- Horseshoe crater
- Lava domes
- Debris avalanche deposit
Connection how it relates
- Cowlitz River Cause and effect
- Cowlitz Indian Tribe
- Igneous Rock
Change how it evolves
- Past
- The Goat Rocks eruptive period, which started in 1800, is the first for which both oral and written…
- Now
- Since 1982 the mountain has been protected within the Mount St. Helens National Volcanic Monument.
- Next
- Geologists predict that future eruptions will be more destructive, because the shape of the lava…
Three roots
Physical
The root for everything made of matter and energy: bodies, places, things and the forces that move them.
124 written of 295 concepts in all
Mental
The root for everything made of thought: thinking, feeling, remembering, language and the ways people reason.
25 written of 81 concepts in all
Spiritual
The root for meaning, purpose, values and the sense of connection to something larger than oneself.
14 written of 50 concepts in all
Start a walk
- Water Cycle
The water cycle is the constant movement of water on, above and below Earth's surface as it changes between liquid, ice and vapor.
- Rock Cycle
The rock cycle describes how rocks change over geologic time among the three main types: igneous, sedimentary and metamorphic.
- Dreaming and Sleep States
Sleep is a daily state of reduced activity and altered consciousness that cycles between REM and non-REM sleep, and dreams happen…
- Flow State
Flow is the state of being fully absorbed in an activity, with energized focus and enjoyment, often called being in the zone.
- Buddhism
Buddhism is an Indian religion and philosophy based on the teachings of the Buddha, who taught a path to freedom from suffering.
- Hinduism
Hinduism is a family of Indian religious traditions united by Dharma, a cosmic order that followers keep through ritual and right…