Causes therevelator.org Four environmental fights on the 2020 ballot Across the country voters will weigh in on ballot measures to decide issues like wolf reintroduction, taxes on oil companies and renewable energy standards.
Impacts www.nationalgeographic.com 25 years after returning to Yellowstone, wolves have helped stabilize the ecosystem New research shows that by reducing populations and thinning out weak and sick animals, wolves have a role in creating resilient elk herds.
