Clark County going 'All-In' on climate change Clark County and last updated 2021-02-17 02:25:46-05 LAS VEGAS (KTNV) â Clark County is going All-In on its response to the impacts of climate change. âThe impacts of climate change are very real and they are upon us,â said Clark County Commission Chairman Marilyn Kirkpatrick. âAs a county set in the Mojave Desert, we know whatâs at stake with our water and energy supply and intensifying heat island impacts. This plan recognizes those unique challenges.â The Sustainability and Climate Action Plan objectives include: Promote sustainable practices and climate action within County operations.