Floods in Brazil spark conspiracy theories over the cause, including toxic jet vapor trails and antennas in Alaska
People being rescued from floods in Porto Alegre, Brazil.
Jefferson Bernardes/Getty Images
- Floods in Brazil's Rio Grande do Sul have sparked a number of online conspiracy theories.
- Some say the High-frequency Active Auroral Research Program has caused the extreme weather.
- Scientists have dismissed such theories.
The state of Rio Grande do Sul in southern Brazil has been facing heavy rains since last week, with 143 people confirmed to have lost their lives in the resulting floods so far...
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