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Meteorites are known for destruction. But this author says life on Earth wouldn't exist without them

Greg Brennecka
Xenia Ritter
Greg Brennecka

The Tucson Gem and Mineral Show wraps up Feb. 13. There, you can find pretty much everything — from vintage beads to ancient fossils to meteorites.

And that’s a subject Greg Brennecka knows a lot about. Brennecka is a cosmochemist and author of the new book, "Impact: How Rocks from Space Led to Life, Culture and Donkey Kong."

The Show spoke with him to learn  about his favorite rocks and how he originally got into meteorites.

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Mark Brodie is a co-host of The Show, KJZZ’s locally produced news magazine. Since starting at KJZZ in 2002, Brodie has been a host, reporter and producer, including several years covering the Arizona Legislature, based at the Capitol.