Complex sentence: In the middle of summer, Miranda learns of volcanoes erupting due to the stronger pull of the Moon's gravity, polluting the Earth's atmosphere and blocking the Sun, paving the way for extremely cold winters and permanently gray skies.
Split into simpler sentences: In the middle of summer, Miranda learns of volcanoes erupting due to the stronger pull of the Moon's gravity. They pollute the Earth's atmosphere and block the Sun, paving the way for extremely cold winters and permanently gray skies.