Researchers examined more than 600 MRI scans.
More people on the roads means it's more likely someone will do something stupid.
It was captured by the National Science Foundation's newest telescope.
Climate change is also a concern.
As a group of international experts are warning more must be done to halt the decline of insect populations.
"It's strongly recommended to not drink or touch the pink water."
A study last year found insect numbers are plummeting, one of the authors warning they could be extinct in 100 years.
When scientists discovered an unexpected link in 2014, many biologists remained sceptical.
The inventors say it's reasonable to be concerned about where their research might lead.