The world’s biggest butterfly migration

Today's story: Monarch butterflies migrate thousands of kilometers from across the U.S. and Canada to just a few mountain forests in central Mexico. They rely on the sun, the Earth’s magnetic field, and a unique multi-generational life cycle to complete the journey. But their numbers are falling due to habitat loss and climate change.Transcript & Exercises: https://plainenglish.com/822Full lesson: https://plainenglish.com/822 --Plain English helps you improve your English:Learn about the world and improve your EnglishClear, natural English at a speed you can understandNew stories every weekLearn even more at PlainEnglish.com-- Mentioned in this episode:Hard words? No problemNever be confused by difficult words in Plain English again! See translations of the hardest words and phrases from English to your language. Each episode transcript includes built-in translations into Spanish, Portuguese, Chinese, German, French, Italian, Japanese, Polish, and Turkish. Sign up for a free 14-day trial at PlainEnglish.com