To celebrate Earth Day, Niantic offered Pokémon Go Rewards if you have enough players to clean the planet and tweet your efforts with a hashtag.
the Pokémon Go duck entry both communities achieved all the objectives, which means that there will be a ground-type event for a limited time. This means that the ground-type spawn will increase, Shiny Diglett has been added to the game and Groudon will return to the raids. In addition, players will get double stardust and catch candy when they catch Earth type Pokémon.
This is a great way to stock up on any crushed candy you may need. For example: Trapinch's to get to Flygon, Rhyhorn's to get to Rhyperior, or Swinub's to get to Mamoswine. Rhyperior and Mamoswine are good attackers, and you need lots of candy to level up and evolve both.
Groudon is the best ground attack in the game, so if you do not have one yet, we have a guide for you.
This event will continue until May 2, so be sure to accumulate all the types of terrain you need before that date.