Thanks to the Pokémon GO Newsletter, we now have more information about the Earth Day event!
Last week, Niantic announced their Earth Day 2019 collaboration event where, if enough people participate in cleanup events worldwide, there will be a variety of bonuses. The event will be held from April 29th 2019 to May 2nd 2019. The rewards are as follows:
If 2000 attend, there will be an increased appearance of Ground-type Pokémon.
If 5,000 attend, then there will be an increased appearance of Ground-type Pokémon and shiny Diglett will become available
If 7,000 attend, then will be an increased appearance of Ground-type Pokémon, Shiny Diglett, 2* Catch Stardust & Candy for Event spawns and Groudon will return to raids.
With such great rewards available to everyone, now is the time to get out and GO!