Over the last few weeks, children have called into “The Daily” with a lot of questions about the coronavirus: How did the virus get on earth? What color is coronavirus? And can dogs get it? Today, we try to answer them. Guest: Carl Zimmer, science reporter and author of the “Matter” column for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily. Background reading: Do your children still have more questions? Here’s a guide on how to talk to them about the coronavirus.With many kids home from school, we have some tips for creating structure around your children’s school days, and some recommendations for podcasts to help keep little ones occupied — and learning.