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How eggs are fertilized, Brown dwarf star, Plan B

Ashley Thompson and Mario Ritter Jr. host today's Learning English show. First: Anna Matteo reports about new science on how much animal life begins: the meeting of an egg and sperm. Austrian researchers have found that fertilization works like a lock and key in animals that have a backbone -- from fish to people. (00:53) https://learningenglish.voanews.com/a... Next: The space rock that hit Earth 66 million years ago and killed off the dinosaurs was not the largest meteorite ever to strike our planet. A much bigger one hit more than 3 billion years ago. And researchers of that event say it may have been helpful for the early development of life. John Russell has the details. (04:42) https://learningenglish.voanews.com/a... Next: The LE Science and Technology Report. Bryan Lynn reports on a surprising discovery about the first brown dwarf ever identified. Astronomers say new study suggests the brown dwarf is actually two brown dwarfs orbiting each other. Then, Ashley welcomes Bryan to the studio. She wants to know how many brown dwarfs have been identified since the first in 1995. She also asks about the methods and technology researchers use to observe and study brown dwarfs. (10:06) https://learningenglish.voanews.com/a... Finally: The LE Lesson of the Day. Andrew Smith and Jill Robbins base their instruction on the LE video series, Let's Learn English. Today they focus on episode 43. Do you know what a 'Plan B' is? How do we ask for help or a favor in American English? Learn about those things and how to use modal verbs "would." and "could." (19:22) https://learningenglish.voanews.com/a... Mario and Ashley close the show. --------- Learning English is Voice of America’s multimedia source of news and information for millions of English learners worldwide. We help you build vocabulary, strengthen your speaking skills and improve your ability to communicate for work, school and everyday life. We are not accepting comments here. You are welcome to comment on the stories at our website. EXPLORE OUR PLAYLISTS: » Learning English Podcast:    • Learning English Podcast   » Let's Learn English with Anna! (For children 8-12)    • Let's Learn English with Anna   » Let's Learn English Level 1    • Let's Learn English   » Let's Learn English Level 2    • Let's Learn English Level 2   » VISIT OUR WEBSITE: https://learningenglish.voanews.com » LIKE OUR FACEBOOK PAGE:   / voalearningenglish   » FOLLOW US ON INSTAGRAM:   / voalearningenglish   » FOLLOW US ON TWITTER:   / voalearnenglish   » SUBSCRIBE TO OUR PODCAST ON ITUNES: https://itunes.apple.com/us/podcast/v... Voice of America (VOA) is the largest U.S. international broadcaster, providing news and information in more than 40 languages to an estimated weekly audience of 326 million people.