“The cities that had a US embassy that set up one of these monitors and tweeted out air-quality data saw a decrease of PM2.5 particulates to the tune of 2 to 4 micrograms per cubic meter—compared to their air quality before getting the monitor and to other similar cities that do not have a monitor.”
“From the 40 [vacuumed DNA] samples they took, the team members identified 49 different species, from a rhino down to the guppies in the Rainforest Room. … Some of the detected species — such as the water vole and red squirrel — weren’t even zoo animals; they were just nearby.”
“Tromelin Island had its rats eradicated in 2005 and has since seen an eightfold increase in seabirds. Six locally extinct species of seabirds have also returned.”