Research maps for complex topics
Turn scattered research into a shared topic map.
Thematic helps teams build shared maps of a topic, connect causes and effects, and turn source material into a focused research workspace.
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Cause and effect graph
Sargassum at Beach Resorts
Center node
Sargassum Beach Influx
The anchor of this map (metric). Its strongest causes and effects fan out around it.
Causal relationship
Sargassum Bloom → Sargassum Beach Influx
The record 2025 Great Atlantic Sargassum Belt pushed an unprecedented volume of seaweed onto Caribbean and Gulf shores.
Causal relationship
Sargassum Beach Influx → Beach Cleanup Cost
Record sargassum arrivals on Costa Rica's Caribbean coast drive up cleanup costs for affected beaches
Causal relationship
Sargassum Beach Influx → Tourist Arrivals
Sargassum influx deters visitors to Cancun, contributing to passenger traffic decline at Cancun International Airport
Causal relationship
Sargassum Beach Influx → Resort Revenue
Hotels reduce room prices in response to sargassum-driven demand drop, compressing revenue.
Causal relationship
Sargassum Beach Influx → Sargassum Contamination
Sargassum bioaccumulates arsenic and other heavy metals at sea, so the biomass washing ashore arrives contaminated.
Sargassum Beach Influx
Where the map converges: 1 cause feed in and 4 effects ripple out.
Evidence
0.71Record sargassum arrivals on Costa Rica's Caribbean coast drive up cleanup costs for affected beaches
Source: strongest evidenced effect link
Node detail
strength 84Sargassum Bloom
Best path: Sargassum Bloom → Sargassum Beach Influx
Tour tips
FinaleMake any node the center to re-orient the map, then use discover more to grow the promising branches.
Center orientation
Lineage fans out from the selected center.
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Your map file
Three steps. Then one real map.
We map sources, claims, and certainty before we ask who you are.
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1
Ask
Type the question keeping you up at night
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2
We map it
Sources, claims, causes, evidence strength
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3
You explore it
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- 337 cited sources
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Not sure what a map looks like? Here are a few we made earlier.