Volcano eruption (Reunion island, Indian Ocean).(Credit: iStockphoto)
From Science Daily:
Science Daily (Feb. 18, 2010) — When Earth was young, it exhaled the atmosphere. During a period of intense volcanic activity, lava carried light elements from the planet's molten interior and released them into the sky. However, some light elements got trapped inside the planet. In the journal Nature, a Rice University-based team of scientists is offering a new answer to a longstanding mystery: What caused Earth to hold its last breath?
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